NO142238B

NO142238B - TRACTOR-WORKED MACHINE.

Info

Publication number: NO142238B
Application number: NO772385A
Authority: NO
Inventors: Hannu Niskanen
Original assignee: Valmet Oy
Priority date: 1976-07-06
Filing date: 1977-07-05
Publication date: 1980-04-14
Also published as: FI761974A; SE7707780L; FI53949B; FI53949C; NO142238C; NO772385L

Description

Foreliggende oppfinnelse angår en traktortrukket arbeidsmaskin, som er forsynt med et eller flere støttehjul, The present invention relates to a tractor-drawn work machine, which is provided with one or more support wheels,

av hvilke ett eller flere er svingbare, og et arbeidende organ, hvis høydeavstand til marken er regulerbar. of which one or more are pivotable, and a working body, whose height distance to the ground is adjustable.

Konvensjonelle arheidsmaskiner har denne ulempe at arbeidsbredden ikke kan reguleres og at transportbredden begrenser den største arbeidsbredden. Et annet problem er de vanskeligheter som oppstår ved teigendene. Conventional archeids machines have the disadvantage that the working width cannot be regulated and that the transport width limits the largest working width. Another problem is the difficulties that arise with the property owners.

Ved svinging til venstre ved teigendene tar den i arbeidsstilling bak traktoren på høyre siden beliggende arbeidsmaskinen en snarvei over diket mellom teigene, dersom ikke teigendene er usedvanlig brede. Det er vanskelig nøyaktig å bearbeide teigene og dessuten er fare for skader på arbeidsorganet stor ved passering over diket på grunn av de traktor-trukne arbeidsmaskinenes lave bakkeklaring. Den lave bakke-klaringen beror på at høydereguleringen på det arbeidende organet i konvensjonelle konstruksjoner er så tungvint å utføre at høydereguleringen ikke kommer på tale hver gang det skal snues ved teigendene. When turning to the left at the tee ends, the work machine located in working position behind the tractor on the right side takes a shortcut over the dike between the tees, if the tee ends are not exceptionally wide. It is difficult to precisely work the tees and, moreover, there is a great risk of damage to the working body when passing over the dike due to the low ground clearance of the tractor-drawn working machines. The low ground clearance is due to the fact that the height adjustment of the working body in conventional constructions is so cumbersome to carry out that the height adjustment does not come into question every time it has to be turned at the tee ends.

Hensikten med oppfinnelsen er foruten å eliminere The purpose of the invention is besides to eliminate

den ovenfor nevnte ulempe, også å automatisere arbeidsmaskinens forflytning fra transportstilling til arbeidsstilling og vice versa ved at man i et visst trinn kopler oppløftingen og ned-senkningen av det arbeidende organet til styringen av et eller flere støttehjul. I denne hensikt er oppfinnelsen i det vesent-lige karakterisert ved at støttehjulet eller -hjulene er mekanisk forbundet med det arbeidende organet på en slik måte at støttehjulene ved løfting av det arbeidende organet vesentlig over arbeidshøyden, svinger seg omkring sin vesentlig vertikale svingeakse og derved forflytter seg mot sporene av traktorens the above-mentioned disadvantage, also to automate the movement of the work machine from transport position to work position and vice versa by connecting the lifting and lowering of the working body to the control of one or more support wheels in a certain step. To this end, the invention is essentially characterized in that the support wheel or wheels are mechanically connected to the working member in such a way that the support wheels, when the working member is lifted substantially above the working height, swing around their substantially vertical pivot axis and thereby move towards the tracks of the tractor

I IN

bakhjul, hvorved arbeidsmaskinen forflytter seg mot sin transportstilling og'når denne stilling når det arbeidende organet er vesentlig løftet, og på en slik måte at arbeidsmaskinen fra den sistnevnte stillingen igjen(forflytter seg til sin arbeidsstilling bak og på siden av traktoren ved nedsenking av det arbeidende organet. rear wheel, whereby the working machine moves towards its transport position and when this position when the working body is substantially lifted, and in such a way that the working machine from the latter position again (moves to its working position behind and to the side of the tractor by lowering the the working body.

i in

Oppfinnelsen skal i det følgende forklares nærmere under henvisning til tegningen som viser en utførelsesform for oppfinnelsen. Oppfinnelsen er imidlertid ikke begrenset til denne utførelsesformen. In the following, the invention will be explained in more detail with reference to the drawing which shows an embodiment of the invention. However, the invention is not limited to this embodiment.

Fig. 1 viser en arbeidsmaskin ifølge oppfinnelsen. Fig. 1 shows a work machine according to the invention.

Fig. 2 viser mere i detalj konstruksjonen av arbeidsmaskinen ifølge fig. 1. Fig. 2 shows in more detail the construction of the work machine according to fig. 1.

Den i fig. 1 viste arbeidsmaskinen slepes i en trekkbom 12 som er udreibart festet til arbeidsmaskinen. Ved arbeidsmaskinens ramme 10 kan det festes forskjellige arbeids-organer (i fig. 1 en knivbom 4), og .arbeidsmaskinen bæres av to støttehjul 9,11. ! The one in fig. 1, the working machine is towed in a towing boom 12 which is non-rotatably attached to the working machine. At the frame 10 of the working machine, various working devices can be attached (in Fig. 1 a knife boom 4), and the working machine is carried by two support wheels 9,11. !

Som det fremgår av fig. 2 er arbeidsorganets 4 As can be seen from fig. 2 is the working body's 4

stilling regulerbart ved hjelp av en arbeidssylinder 1 over et i rammen 10 lagret (ved 3) T-formet vinkelstykke 2. Vinkelstykket 2 oppviser et festehull 5, fra hvilket det utgår en leddarm 6. Denne leddarmen 6 styrer' et i og for seg kjent, position adjustable by means of a working cylinder 1 over a T-shaped angle piece 2 stored in the frame 10 (at 3). The angle piece 2 has a fastening hole 5, from which a joint arm 6 emanates. This joint arm 6 controls a known in and of itself ,

med styrespak 8 forsynt hjul 9 som er lagret i rammen 10. Leddmekanismen er valgt slik at lagertappen 7 mellom leddarmen 6 og styrespaken 8, lagertappen 3 mellom vinkelstykket 2 og rammen og festehullet 5 alle ligger vesentlig på samme linje når arbeidsorganet 4 inntar normal arbeidshøyde. Derved overføres en liten høyderegulering til arbeidsorganet bare i liten utstrekning til hjulet 9, hvorved hjulets 9 stilling blir så godt som uforandret. Når arbeidssylindrenes 1 regu-leringsbevegelse er større, dvs. når føreren løfter opp arbeidsorganet 4 (pilen A), trekker vinkelstangen 2 styrespaken.^.. 8 fremover under formidling av leddarmen 6, hvorved det styrende hjulet svinges. Derved styres arbeidsmekanismen inn i sporet til traktorens bakhjul. with control lever 8 provided wheel 9 which is stored in the frame 10. The joint mechanism is chosen so that the bearing pin 7 between the joint arm 6 and the control lever 8, the bearing pin 3 between the angle piece 2 and the frame and the fixing hole 5 all lie substantially on the same line when the working member 4 assumes normal working height. Thereby, a small height adjustment is transferred to the working member only to a small extent to the wheel 9, whereby the position of the wheel 9 remains virtually unchanged. When the working cylinders 1 control movement is greater, i.e. when the driver lifts up the working member 4 (arrow A), the angle rod 2 pulls the control lever .^.. 8 forward under mediation of the joint arm 6, whereby the steering wheel is swung. Thereby, the working mechanism is guided into the track of the tractor's rear wheel.

Det ovenfor beskrevne arrangement ifølge oppfinnelsen passer også på en konvensjonell konstruksjon med en i forhold, til arbeidsmaskinens ramme svingbar trekkbom. Derved svinger arbeidsorganets stigende bevegelse trekkbommen tvangsstyrt mot arbeidsmaskinens ramme, hvorved transportbredden minsker. The arrangement according to the invention described above is also suitable for a conventional construction with a drawbar which can be pivoted in relation to the working machine's frame. As a result, the working body's upward movement swings the drawbar forcefully against the working machine's frame, thereby reducing the transport width.

Arbeidssylinderen 1, som styrer oppløftingen og senkingen av arbeidsorganet 4, kan være tilkoplet traktorens normale hydrauliske system, hvorved arbeidsmaskinens bevegelse kan styres fra styrehuset uten at arbeidet behøver å avbrytes. The working cylinder 1, which controls the lifting and lowering of the working member 4, can be connected to the tractor's normal hydraulic system, whereby the movement of the working machine can be controlled from the wheelhouse without the work needing to be interrupted.

Claims

1. Tractor-drawn working machine, which is equipped with one or more support wheels (9,11), one or more of which are pivotable, and a working body (4), whose height distance to the ground is adjustable, characterized in that the support wheel or wheels are mechanically connected to the working member (4), in such a way that the support wheels (9,11) when lifting (arrow A direction) of the working member (4) substantially above the working height, swing around their substantially vertical pivot axis and thereby move against the tracks of the tractor's rear wheels, whereby the working machine moves towards its transport position and reaches this position when the working body is substantially lifted, and in such a way that the working machine from the latter position again moves to its working position behind and to the side of the tractor when lowering (in the direction of the arrow B) of the working body (4).

2. Work machine according to claim 1, characterized in that a power device, e.g. a hydraulic working cylinder is arranged for lifting and lowering the working member (4) and for swinging a control lever (8) for the working machine's outer support wheel (9) by means of an articulated arm mechanism (2,3,5,6,7)-

3- Work machine according to claim 2, characterized in that the work member (4) is attached by a T-shaped angle piece (2) which is stored in the work machine's frame (10), and that one arm of the aforementioned angle piece is affected by the working cylinder (1) or the like, while another arm is attached to the working member (4) and the third arm is connected by means of an articulated arm to the control lever (8) of the supporting wheel (9).

4. Work machine according to claim 2 or 3, characterized in that said articulated arm mechanism (2,3,5,6,7) is arranged so that height adjustments in the vicinity of the work body's (4) working position are not converted at all or only to a small extent into oscillating movements of the support wheel (9).