NO117270B

NO117270B -

Info

Publication number: NO117270B
Application number: NO16588266A
Authority: NO
Inventors: P Hast
Original assignee: P Hast
Priority date: 1965-12-10
Filing date: 1966-12-06
Publication date: 1969-07-21
Also published as: DE1507249B1; GB1160689A; BE691021A; NL153757B; AT271070B; DK120874B; NL6617209A; FR1504282A; CH450037A; FI41701B

Description

Maskin til klipping av gress, hekker o.l. Machine for cutting grass, hedges, etc.

Denne oppfinnelse vedrører en maskin til klipping av gress, hekker o.l., som omfatter en av et metallblad bestående knivskinne med i metallbladets tverretning forløpende fingre samt en fast skinne med i tverretningen forløpende fingre, i forhold til hvilken skinne knivskinnen er innrettet til å beveges frem og tilbake. Maskinen ifølge oppfinnelsen utmerker seg i det vesentlige ved at den bevegelige knivskinnes fingre rager utenfor den faste skinnes fingre og har en mot sine frie i det vesentlige rette ender tiltagende bredde slik at de frie ender ved den bevegelige knivskinnes fingre under knivskinnens frem- og tilbakegående bevegelse tjener som mateorganer for de gresstrå eller annet som skal klippes, og at også den faste skinnes fingre har en mot sine frie ender tiltar- gende bredde, slik at de sammen med den bevegelige,, knivskinnes fingre holder fast de av knivskinnen innmatede gresstrå o.l. under selve klippingen.. This invention relates to a machine for cutting grass, hedges etc., which comprises a knife rail consisting of a metal blade with fingers running in the transverse direction of the metal blade and a fixed rail with fingers running in the transverse direction, in relation to which rail the knife rail is arranged to move forward and back. The machine according to the invention is essentially distinguished by the fact that the fingers of the movable knife rail protrude beyond the fingers of the fixed rail and have an increasing width towards their free, essentially straight ends, so that the free ends at the fingers of the movable knife rail during the reciprocating movement of the knife rail serve as feeding organs for the blades of grass or other things that are to be cut, and that the fingers of the fixed rail also have a width that increases towards their free ends, so that together with the movable blade rail, the fingers of the blade rail hold the blades of grass fed in by the blade rail etc. during the actual cutting..

Ved hjelp av oppfinnelsen har man tilveiebragt en maskin som With the help of the invention, a machine has been provided which

muliggjør rask og effektiv klipping av gress, hekker o.l; enables fast and efficient cutting of grass, hedges, etc.;

Oppfinnelsen skal forklares nærmere ved hjelp av et eksem- The invention shall be explained in more detail by means of an example

pel under henvisning til tegningen, hvor fig. 1 viser deier av knivskinnen og den faste skinne sett fra siden, hvor de griper i hverandre,.figi 2 viser et tverrsnitt av de to skinner som er i inngrep med hverandre, fig. 3 viser i mindre målestokk knivskinnen pile with reference to the drawing, where fig. 1 shows them of the knife rail and the fixed rail seen from the side, where they engage each other, Fig. 2 shows a cross-section of the two rails which engage with each other, fig. 3 shows the knife rail on a smaller scale

og den faste skinne sett fra siden, hvor skinnene bare delvis griper i hverandre, og fig. H viser selve maskinen sett fra siden og i enda mindre målestokk. and the fixed rail seen from the side, where the rails only partially engage each other, and fig. H shows the machine itself seen from the side and on an even smaller scale.

På tegningen er maskinens knivskinne betegnet méd 1 og er innrettet til å bibringes en frem- og tilbakegående bevegelse i forhold til en skinne 2 som er anordnet fast i maskinen. Begge skinner 1 og 2 er forsynt med i den samme tverretning forløpende fingre 3 og »t, . ;.^«. - In the drawing, the machine's knife rail is denoted by 1 and is designed to impart a reciprocating movement in relation to a rail 2 which is fixed in the machine. Both rails 1 and 2 are provided with fingers 3 and »t, extending in the same transverse direction. ;.^«. -

Knivskinnen 1 består av et fjærende metallblad som ;i sin bruksstilling i maskinen skal være strukket. Kniyskinriéns 1 fingre 3 utgjøres av partier mellom'uttagninger 5 i metallbladéts.1 kant. Disse kantuttagninger 5 er fortrinnsvis sirkelbuéformede'og større enn en halvsirkel. Ifølge den viste foretrukne- utførelsesform Mr ::'■■■ > de sirkelbueformede uttagninger 5 en dybde som ér omtrent lik. av uttagningenes diameter. Uttagningene 5 er ved sine kanter . y. forsynt med skarpe egger 6 som befinner seg hovedsakelig i knivskinnens 1 midtplan, hvilket er av betydning for at fingrene 3 ikrke skal feste seg ved den faste skinnes 2 fingre t når knivskinnen 1 utfører sin frem- og tilbakegående bevegelse. The knife rail 1 consists of a springy metal blade which, in its position of use in the machine, must be stretched. Kniyskinrién's 1 fingers 3 are made up of sections between recesses 5 in the metal blade's 1 edge. These edge recesses 5 are preferably circular arc-shaped and larger than a semicircle. According to the preferred embodiment Mr ::'■■■ > the circular arc-shaped recesses 5 showed a depth which is approximately equal. of the diameter of the withdrawals. The outlets 5 are at their edges. y. provided with sharp edges 6 which are located mainly in the middle plane of the knife rail 1, which is important for the fingers 3 ikrke to attach to the fixed rail's 2 fingers t when the knife rail 1 performs its reciprocating movement.

Den faste skinne 2 består av et par fjærende metallblad 7 The fixed rail 2 consists of a pair of springy metal blades 7

og 8 som er anordnet rett overfor hverandre i en innbyrdes avstand som svarer til knivskinnens 1 tykkelse og er ved sin ene kant forsynt med rett overfor hverandre beliggende uttagninger 9, hvor de tannformede partier mellom de nevnte uttagninger 9 utgjør den fas- and 8 which are arranged directly opposite each other at a mutual distance that corresponds to the thickness of the knife rail 1 and is provided at one edge with recesses 9 located directly opposite each other, where the tooth-shaped parts between said recesses 9 form the phase

te skinnes 2 fingre 4. Metallbladene 7 og 8 er skilt ved et metallblad 10 som er noe tykkere enn knivskinnen 1 slik at denne løper lett mellom metallbladene 7 og 8. Hvis metallbladet i knivskinnen 1 har en tykkelse på omtrent 0,5 mm, kan metallbladéts 10 tykkelse ligge mellom 0,6 - 0,7 mm. Metallbladéts 10 kant 11 som vender 2 fingers 4. The metal blades 7 and 8 are separated by a metal blade 10 which is somewhat thicker than the knife rail 1 so that it runs easily between the metal blades 7 and 8. If the metal blade in the knife rail 1 has a thickness of approximately 0.5 mm, can the thickness of the metal blade is between 0.6 - 0.7 mm. The edge 11 of the metal blade 10 which faces

mot fingrene k befinner seg i avstand fra disse, og kanten 11 kan tjene som styring for knivskinnens 11 kant 12 som vender bort fra fingrene 3. Metallbladene 7, 8 og 10 kan være forbundet med hverandre ved punktsveising, liming eller på annen måte. towards the fingers k are at a distance from them, and the edge 11 can serve as a guide for the edge 12 of the knife rail 11 which faces away from the fingers 3. The metal blades 7, 8 and 10 can be connected to each other by spot welding, gluing or in some other way.

Den faste skinne 2 som består av de fjærende metal-lblader 7, 8 og 10, skal være innspent i maskinen, i det minste når den har en lengde som er større enn i meter. The fixed rail 2, which consists of the springy metal blades 7, 8 and 10, must be clamped in the machine, at least when it has a length greater than meters.

Den faste skinnes 2 fingre f er likesom fingrene 3 på knivskinnen 1 anordnet vinkelrett på skinnens lengderetning, og fingrenes bredde tiltar-mot deres frie ender. The fixed rail's 2 fingers f are, like the fingers 3 on the knife rail 1, arranged perpendicular to the longitudinal direction of the rail, and the width of the fingers increases towards their free ends.

Som det fremgår av tegningen, når knivskinnens 1 fingre 3 med sine ender utenfor endene av fingrene f på den faste skinne 2. Fingrenes 4 ender befinner seg således omtrent i samme høyde som en linje gjennom de sirkelbuéformede uttagningers 5 sentre. Bunnene i kantuttagningene 5 og 9 i skinnen 1 og den faste skinne 2 befinner seg derimot i samme høyde. Fingrene 3 og 4 på knivskinnen 1 og den faste skinne 2 har samme bredde og er anordnet i samme avstand fra hverandre slik at de kan befinne seg rett overfor hverandre. Ut fra en slik stilling skal fingrene 3 på knivskinnen 1 bevege seg et helt antall delinger, f.eks. to, under knivskinnens frem- og tilbakegående bevegelse. As can be seen from the drawing, the fingers 3 of the knife rail 1 reach with their ends outside the ends of the fingers f on the fixed rail 2. The ends of the fingers 4 are thus approximately at the same height as a line through the centers of the arc-shaped recesses 5. The bottoms of the edge recesses 5 and 9 in the rail 1 and the fixed rail 2 are, however, at the same height. The fingers 3 and 4 on the knife rail 1 and the fixed rail 2 have the same width and are arranged at the same distance from each other so that they can be directly opposite each other. From such a position, the fingers 3 on the knife rail 1 must move a whole number of divisions, e.g. two, during the reciprocating motion of the knife rail.

Ifølge den på fig. 1 med streklinjer viste utførelse skal fingrenes 3 ytre kant 23 være buktet noe utover, samtidig som over-gangene 21 mellom nevnte kant 23 og uttagningene 5 må være avrun-det. Denne utførelse velges utelukkende av sikkerhetshensyn, da utførelsen med rett kant 23 resulterer i samme klippefunksjon for maskinen. According to the one in fig. 1, the outer edge 23 of the fingers 3 must be curved somewhat outwards, while the transitions 21 between said edge 23 and the recesses 5 must be rounded. This design is chosen solely for safety reasons, as the design with straight edge 23 results in the same cutting function for the machine.

Uttagningene 5 og 9 er fortrinnsvis frembragt ved stansning, The recesses 5 and 9 are preferably produced by punching,

men de kan også utføres på annen måte. but they can also be performed in another way.

Gressklippemaskinen ifølge fig. 4 er forsynt med to sett skinner 1 og 2. Maskinen omfatter nemlig et rør 13 som er forsynt med diametralt rett overfor hverandre i lengderetningen forløpende faste skinner 2 som er innspent mellom fester 11. Med de faste skinner 2 samvirker knivskinner 1, som altså er innrettet til å bibringes en frem- og tilbakegående bevegelse, av hvilken grunn knivskinnene 1 ved sin ene ende samvirker med en bevegelsesoverførings-innretning, mens deres andre ender samvirker med en på røret 13 The lawn mower according to fig. 4 is provided with two sets of rails 1 and 2. Namely, the machine comprises a tube 13 which is provided with fixed rails 2 running diametrically opposite each other in the longitudinal direction, which are clamped between fasteners 11. Knife rails 1 interact with the fixed rails 2, which are arranged to impart a reciprocating movement, for which reason the knife rails 1 cooperate at one end with a movement transmission device, while their other ends cooperate with one on the tube 13

svingbart anbragt del 15. pivotably arranged part 15.

Bevegelse8oyerføringsanordningen utgjøres av en dreven aksel The motion guide device consists of a driven shaft

16 som drives fra en motor e.l. og som går gjennom røret 13, og hvis, 16 which is driven from a motor or the like. and which passes through pipe 13, and if,

endeparti over en mellomkoblingsdel 17 er koblet slik til en del end part above an intermediate connection part 17 is connected in this way to a part

19 som er svingbart anbragt i et stativ 18, at denne del under ak- 19 which is pivotably placed in a stand 18, that this part under ac-

selens 16 rotasjon bibringes en vippebevegelse. Det er således de- rotation of the harness 16 is imparted with a rocking movement. It is thus de-

lens 19 vippebevegelse som bibringer knivskinnene 1 den frem- og tilbakegående bevegelse. lens 19 rocking movement which imparts to the knife rails 1 the reciprocating movement.

Delenes 15 og 19 yttersider er sirkelbuéformede med delenes The outer sides of the parts 15 and 19 are circular arc-shaped with the parts

aksler 20 og 21 som sentre. Disse sider er ved bladfjærer 22 e.l. axes 20 and 21 as centres. These sides are at leaf springs 22 e.l.

forbundet slik med knivskinnene 1 at disse beveger seg frem og til- connected with the knife rails 1 in such a way that these move forward and to-

bake uten noen som helst sidebevegelse. Bladfjærene 22 avrulles altså fra delenes 15 og 19 yttersider. bake without any lateral movement whatsoever. The leaf springs 22 are thus unrolled from the outer sides of the parts 15 and 19.

Knivskinnenes 1 forbindelse med bladfjærene 2 2 bør være slik The connection of the knife rails 1 with the leaf springs 2 2 should be like this

at den er lett løsbar slik at knivskinnene 1 kan byttes ut om nød- that it is easily detachable so that the knife rails 1 can be replaced in case of emergency

vendig . turn around.

Claims

1. Machine for cutting grass, hedges etc., which includes a knife rail (1) consisting of a metal blade with in the metal blade's transverse

direction extending fingers (3) as well as a fixed rail (2) with transversely extending fingers CO, in relation to which rail the knife rail (1) is arranged to move back and forth, characterized in that the movable knife rail (1) fingers ( 3) protrudes beyond the fingers CO of the fixed rail (2) and has an increasing width towards its free, essentially straight ends, so that the free ends at the fingers (3) of the movable knife rail (1) during the reciprocating movement of the knife rail serve as feeding means for the blades of grass or other things to be cut, and that also the fingers CO of the fixed rail (2) have an increasing width towards their free ends, so that together with the fingers (3) of the movable blade rail (1) they hold those of the blade rail (1) fed blades of grass, etc. during the actual cutting.

2. Machine according to claim 1, characterized in that the fixed rail (2) consists of two metal blades (7, 8) which are arranged directly opposite each other at a distance that corresponds to the thickness of the knife rail (1) and which at one edge is provided with recesses (9) located directly opposite each other, where the tooth-shaped parts between said recesses (9) form the fingers («f) of the fixed rail (2).

3. Machine according to claim 2, characterized in that the two metal blades (7, 8) which together form the fixed rail (2) are separated by a metal blade (10), if the edge (11) facing the fingers of the fixed rail is located at a distance from these. k.

Machine according to one or more of the preceding claims, characterized in that the fingers (3) of the knife rail (1) are provided at their edges with sharp edges (6) which are located mainly in the middle plane of the knife rail (1).

5. Machine according to one or more of the preceding claims, characterized in that the fingers (3) of the knife rail (1) are made up of the parts between recesses (5) in one edge of the metal blade, which recesses (5) are circular arc-shaped and larger than a semicircle, where they preferably have a depth that is approximately equal to 3A of the diameter of the recesses (5).

6. Machine according to claims 2 and 5, characterized in that the bottoms in the edge recesses (9, 5) in the fixed rail (2) and in the knife rail (1) are located at approximately the same height in relation to each other.

7. Machine according to one or more of claims 1 to 6, characterized in that the fingers (3, f) on the fixed rail (2) and the knife rail (1) have approximately the same width and are arranged at approximately the same distance from each other.