DK154675B

DK154675B - SCAN EQUIPMENT

Info

Publication number: DK154675B
Application number: DK210683A
Authority: DK
Inventors: Gerhard Duecker
Original assignee: Duecker Gerhard Landmasch
Priority date: 1982-05-17
Filing date: 1983-05-11
Publication date: 1988-12-12
Also published as: DK210683A; DK210683D0; DE3218525A1; DK154675C; NL8301415A; DE3218525C2; NL191008C; NL191008B

Description

iin

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Opfindelsen vedrører et mejeapparat til skråninger, som angivet i indledningen til krav 1.The invention relates to a slope mowing apparatus as set forth in the preamble of claim 1.

Ved et kendt apparat af denne art er udliggerens indre arm fastgjort til en konsol ved hjælp af 5 et lænkeled, der bestemmer den første svingakse, hvilket lænkeled er lejret svingbart om en lodret akse på monteringsstativets hoveddrager. Såfremt udliggeren med sit mejeaggregat skal overføres fra en arbejdsstilling, i hvilken udliggeren strækker sig på tværs 10 af arbejdskøretøjets kørselsretning, til en hvilestilling til transport, svinges udliggerens indre arm opefter, mejeværket klappes op mod den øvre arms yderside, og udliggerens ydre arm klappes ind mod den indre arm. I denne stilling hvor udliggeren danner 15 et spidsvinklet opretstående V, og hvor mejeaggrega-tet har en tilnærmelsesvis lodret retning med mod siden vendende mejeværktøjer, svinges konsollen derefter, og den af udligger og mejeaggregat bestående konstruktionsenhed bringes til en stilling gennem 20 90°, i hvilken udliggerens arme befinder sig i et plan, der stort set er parallelt med kørselsretningen, og hvor mejeaggregatet med dets mejeværktøjer er rettet fremefter i kørselsretningen eller bagud. Hydraulcylindrene er således indrettet, at de giver 25 udliggerens arme og mejeaggregatet i hvilestillingen et sådant drejemoment, der fremkalder hvilestillingen og sikrer denne.In a known apparatus of this kind, the inner arm of the boom is attached to a bracket by means of a link joint which determines the first pivot axis, which link link is pivotally mounted about a vertical axis on the main support of the mounting frame. If the boom with its mowing unit is to be transferred from a working position in which the boom extends across the working direction of the working vehicle to a resting position for transport, the boom of the boom is swung upwards, the boom is folded against the outside of the upper arm and the boom of the boom is folded in towards the inner arm. In this position where the boom is formed by an angled upright V and the mower unit has an approximately vertical direction with lateral mowing tools, the bracket is then swung and the construction unit of the boom and mower assembly is brought to a position through 20 °. which arms of the outrigger are in a plane substantially parallel to the direction of travel and wherein the mower assembly with its cutting tools is directed forward or in the direction of travel. The hydraulic cylinders are so arranged that they provide the arms of the boom and the mower assembly in the resting position such a torque which induces the resting position and secures it.

Et sådant apparat hindrer i dets hvilestilling udsynet og overblikket for føreren af arbejds-30 køretøjet, bevirker en ensidig belastning af monteringsstativet og gennem dette af arbejdskøretøjet og kræver komplicerede sikringsmidler til sikring af apparatets hvilestilling under transportkørsler.Such an apparatus, in its resting position, obstructs the view and overview of the driver of the working vehicle, causes a unilateral load on the mounting frame and through it of the working vehicle, and requires complicated means of securing the device's resting position during transport runs.

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22

Med opfindelsen tilsigtes der tilvejebragt et apparat af den nævnte art, der ved enklere udformning kan overføres til en selvsikrende hvilestilling, der giver føreren frit udsyn, og som i forstærket 5 grad nedsætter transportfarer.The invention is intended to provide an apparatus of the aforementioned kind which, in simpler form, can be transferred to a self-resting resting position which gives the driver free vision and which reduces transport hazards to an enhanced degree.

Dette opnås ifølge opfindelsen ved de i den kendetegnende del af krav 1 anførte træk. Hvad angår yderligere enkeltheder henvises der til krav 2-15.This is achieved according to the invention by the features of the characterizing part of claim 1. For further details, reference is made to claims 2-15.

Apparatet ifølge opfindelsen tilvejebringer 10 uden nogen indskrænkning af dets anvendelighed under arbejdet en transportmulighed for apparatet i en hvilestilling, hvor apparatet næsten fuldstændigt ligger inden for konturen af monteringsstativet og dermed af arbejdskøretøjet og samtidig så lavt, at 15 føreren af arbejdskøretøjet har uhindret udsyn til alle sider. I hvilestillingen er arbejdsværktøjerne ligesom i arbejdsstillingen vendt mod jorden, så at fare for personer mindskes, medens samtidig alle dele også uden låsemidler søger at bibeholde 20 deres stilling i hvilestillingen. Nogen som helst fare for en uønsket udklapning fra hvilestillingen på transportkørsler eller efter henstilling af apparatet er således på pålidelig måde udelukket.The apparatus according to the invention provides 10 without any limitation of its usefulness during work a transport option for the apparatus in a resting position where the apparatus is almost completely within the contour of the mounting frame and thus of the working vehicle and at the same time so low that the driver of the working vehicle has unobstructed views to all pages. In the resting position, the working tools are facing the ground, just as in the working position, so that danger to persons is reduced, while at the same time all parts also without locking means seek to maintain their position in the resting position. Any danger of unwanted folding from the rest position on transport runs or after recommending the appliance is thus reliably excluded.

Talrige yderligere enkeltheder og fordele 25 fremgår af den efterfølgende beskrivelse af et udførelseseksempel for opfindelsen og tegningen, hvor fig J- viser et på forsiden af et bærekøretøj anbragt mejeapparat til skråninger i arbejdsstilling, fig. 2 et billede i lighed med fig. 1 med 30 mejeapparatet til skråninger i hvilestilling, fig. 3 mejeapparatet til skråninger i hvilestillingen i fig. 2 set ovenfra, og fig. 4 en forenklet hydraulisk koblingsplan for betjeningen af hydraulikdrevet til mejeapparatet 35 til skråninger.Numerous additional details and advantages 25 will become apparent from the following description of an embodiment of the invention and the drawing, in which Fig. J- shows a cutting device mounted on the front of a carrier for slopes in working position. 2 is a view similar to FIG. 1 with the 30 cutting machine for slopes in a resting position; FIG. 3 shows the slope cutter in the rest position of FIG. 2 is a plan view of FIG. 4 shows a simplified hydraulic coupling plane for operating the hydraulic drive of the cutting machine 35 for slopes.

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Det på tegningen viste mejeapparat til skråninger består af et monteringsstativ 2, der er indrettet til at forbindes med forenden eller bagenden af en landbrugstraktor eller et lignende arbejds-5 køretøj lf der har en på tværs af kørselsretningen 3 forløbende bjælkeagtig hoveddrager 4, der er forbundet svingbart om en lodret akse 5 med en til traktoren fastgjort tilslutningsdel 6 af monteringsstativet 2, og som med et støttehjul 7 10 hviler på jorden. Dette støttehjul 7 er anbragt under hoveddrageren 4 i området ved dennes mod arbejdet vendende ende og overtager i mejeapparatets arbejdsstilling en del af kræfterne. Sammen med et ikke vist nedklappeligt ståstativ kan mejeapparatet 15 efter frakobling fra arbejdskøretøjet 1 opstilles på jorden.The slope mowing device shown in the drawing consists of a mounting rack 2 arranged to be connected to the front or rear of an agricultural tractor or a similar working vehicle lf having a beam-like main carrier extending transversely of the driving direction 3 pivotally about a vertical axis 5 with a connection part 6 of the mounting frame 2 fixed to the tractor and which rests on the ground with a support wheel 7 10. This support wheel 7 is positioned under the main carrier 4 in the region at its opposite end to the work and takes over some of the forces in the working position of the mower. Along with a folding stand not shown, the cutter 15 can be installed on the ground after disconnection from the working vehicle 1.

Mejeapparatet til skråninger omfatter endvidere en udligger 8 med to led, der omfatter en indre arm 9 og en ydre arm 10. Den indre arm 9 er for-20 bundet svingbart om en første, vandret svingakse 11, der er parallel med kørselsretningen, med arbejds-eller apparatenden af hoveddrageren 4. Svingaksen bestemmes ved det viste eksempel af en vandret hængseltap 12, der stikker vandret frem fra enden 25 af hoveddrageren 4 på dennes bort fra arbejdskøretøjet 1 vendende side. Svarende hertil har udliggeren 8 et i afstand foran hoveddrageren 4 beliggende bevægelsesplan.The slope cutting apparatus further comprises a two-jointed boom 8 comprising an inner arm 9 and an outer arm 10. The inner arm 9 is pivotally connected to a first horizontal pivot axis 11 parallel to the direction of travel with work. -or the device end of the main carrier 4. The pivot axis is determined by the example shown by a horizontal hinge pin 12 extending horizontally from the end 25 of the main carrier 4 on its side facing away from the working vehicle 1. Correspondingly, the boom 8 has a plane of movement located in front of the main carrier 4.

Den indre arm 9 af udliggeren 8 er nær 30 den første svingakse 11 ombukket stort set under en ret vinkel og har svarende hertil, et kort ben 13 og et langt ben 14, idet ombukningen er foretaget således, at det korte ben i mejeapparatets arbejdsstilling indtager en fra den første svingakse 11 opad 35 rettet stilling.Nearly 30, the inner arm 9 of the boom 8 is bent over the first pivot axis 11 substantially at a right angle and, correspondingly, has a short leg 13 and a long leg 14, the folding being done so that the short leg in the working position of the mower occupies a position directed from the first pivot axis 11 upwards 35.

DK 154675 B i På den mod den ydre arm 10 vendende ende har det lange ben 14 af den indre arm 9 et ombukket endestykke 15, til hvis ende den ydre arm 10 ar svingbart forbundet om en anden, med den 5 første svingakse 11 parallel svingakse 16.DK 154675 B i At the end facing the outer arm 10, the long leg 14 of the inner arm 9 has a folded end piece 15, the end of which the outer arm 10 is pivotally connected to another, with the first pivot axis 11 parallel pivot axis 16th

Forbindelsen er tilvejebragt ved hjælp af en ikke nærmere vist hængseltap, så at den ydre arm 10 strækker sig i flugtende forlængelse af den indre arm 9, dvs. i samme bevægelsesplan som den indre 10 arm 9.The connection is provided by means of a hinge pin not shown, such that the outer arm 10 extends in flush extension of the inner arm 9, ie. in the same plane of motion as the inner 10 arm 9.

Den ydre arm 10 har på sin side en ydre del 17, der i forhold til en indre del 18 er ombukket i retning mod et mejeaggregat 19. Denne ombuknings vinkel er tilpasset således til vinkler-15 ne for ombukningerne mellem det korte ben 13 og det lange ben 14 på den ene side, og det lange ben 14 og endestykket 15 på den anden side, så at den ydre del 17 i hvilestillingen for udliggeren 8, der skal beskrives nærmere i enkeltheder 20 i det følgende, indtager en stort set parallel stilling i forhold til det lange ben 14. Fortrinsvis ligger ombukningsvinklen ligesom ved ombukningen mellem det lange ben 14 og endestykket 15 i et område fra stort set 120 til 150°.The outer arm 10, in turn, has an outer portion 17 which, in relation to an inner portion 18, is folded in the direction of a mower assembly 19. This angle of folding is thus adapted to the angles 15 of the folds between the short leg 13 and the long legs 14 on one side, and long legs 14 and end piece 15 on the other, so that the outer portion 17 in the resting position of the boom 8, to be described in more detail 20 below, occupies a substantially parallel position with respect to the long leg 14. Preferably, as with the bend between the long leg 14 and the end piece 15, the bending angle is in a range of substantially 120 to 150 °.

25 Ved den ydre ende af den ydre arm 10 af ud liggeren 8 er mejeaggregatet 19 tilsluttet svingbart om en tredje svingakse 20, som udgøres af en hængseltap 21, der stikker vandret frem fra enden af den ydre arm 10 i samme retning som hæng-30 seltappen 12, så at mejeaggregatet 19 er i en stilling foran den ydre arm 10's bevægelsesplan.At the outer end of the outer arm 10 of the outrigger 8, the mower assembly 19 is pivotally connected about a third pivot axis 20, which is formed by a hinge pin 21 extending horizontally from the end of the outer arm 10 in the same direction as the hinge 30. the sealing pin 12 so that the mower assembly 19 is in a position in front of the plane of motion of the outer arm 10.

Til betjening af udliggeren 8's indre arm 9 er der en første hydraulcylinder 22, der i et punkt 23 er hængslet til den fra svingaksen 11 fjerneste en- 5To operate the inner arm 9 of the boom 8, there is a first hydraulic cylinder 22 which is hinged at a point 23 to the farthest end of the pivot axis 11.

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de af hoveddrageren 4 i højde med den første svingakse 11, og hvis stempelstang i et punkt 24 er hængslet til den indre am 9 ved armens ombukning.those of the main carrier 4 at the height of the first pivot axis 11 and whose piston rod at a point 24 is hinged to the inner am 9 at the arm bend.

Til svingbevægelse af den ydre am 10 er 5 der en anden hydraulcylinder 25, der dels er hængslet ved 26 til en konsol 27 på undersiden af den lange arm 14, dels ved 28 til en anden konsol 29 på undersiden af den ydre am 10.For pivotal movement of the outer am 10, there is a second hydraulic cylinder 25 which is hinged at 26 to a bracket 27 on the underside of the long arm 14 and partly to 28 to another bracket 29 on the underside of the outer am 10.

Til svingbevægelse af mejeaggregatet 19 i 10 forhold til den ydre arm 10 er der en tredje hydraul-cylinder 30, der dels er hængselforbundet ved 31 i ombukningsområdet for den ydre am 10, dels ved 32 er hængselforbundet med en am 33, der stikker op lodret over mejeaggregatet 19.For pivotal movement of the mower assembly 19 in relation to the outer arm 10, there is a third hydraulic cylinder 30 which is partly hinged at 31 in the bending region of the outer am 10 and partly at 32 is hinged with an am 33 that projects vertically over the mower deck 19.

15 Fig. 1 viser i fuldt optrukne linier mejeaggre gatet i en arbejdsstilling på en mejeflade, der forløber stort set parallelt med kørebanens plan.FIG. 1 shows in full lines the mowing deck in a working position on a mowing surface which runs almost parallel to the plane of the roadway.

Som vist med punkterede linier af det ydre område af udliggeren og af mejeaggregatet kan mejeaggregatet 20 19 også anvendes til mejeflader på skråninger, der kan strække sig under eller over arbejdskøretøjet l's køreplan. Endvidere kan sådanne skråningsflader vende imod eller bort fra arbejdskøretøjet 1.As shown with dashed lines of the outer area of the boom and of the mower deck, the mower deck 20 19 may also be used for mowing surfaces on slopes which may extend below or above the working plane of the working vehicle 1. Furthermore, such sloping surfaces can face or away from the working vehicle 1.

Såfremt nu mejeapparatet skal overføres fra 25 sin arbejdsstilling i fuldt optrukne linier i fig. 1 til sin hvilestilling i henhold til fig. 2 og 3, sættes der først tryk på hydraulcylinderen 22, der ligesom hydraulcylinderen 25 og 30 kan være trykløs under arbejdsoperationerne, når mejeaggre-30 gatet 19 selv støtter sig på jorden. Ved at sætte tryk på den første hydraulcylinder 22 i retning af en indtrækning af dens stempelstang svinges udliggeren 8's indre am 9 opefter, indtil denneIf now the mower is to be transferred from its working position in fully drawn lines in fig. 1 to its resting position according to FIG. 2 and 3, pressure is first applied to the hydraulic cylinder 22, which, like the hydraulic cylinders 25 and 30, can be pressure-free during the work operations when the mower unit 19 itself supports the ground. By applying pressure to the first hydraulic cylinder 22 in the direction of a retraction of its piston rod, the inner am 9 of the boom 8 is pivoted upwards until it

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6 indre arm 9 når den i fig. 1 med punkterede linier angivne mellemstilling/ hvor angrebspunkterne 23 og 24 for hydraulcylinderen 22 og den første svingakse 11 befinder sig i et fælles plan, og hvor hydraul-5 cylinderen 22 således indtager en dødpunktstilling.6, the inner arm 9 reaches the one shown in FIG. 1 with dashed lines indicated intermediate position / where the attack points 23 and 24 of the hydraulic cylinder 22 and the first pivot axis 11 are in a common plane, and the hydraulic cylinder 22 thus assumes a dead point position.

Ved den ligeledes med punkterede linier viste stilling af den ydre am 10 og mej eaggregatet 19 i denne mellemstilling af den indre am 9 har udliggeren 8 og mejeaggregatet 19 et fælles tyngde-10 punkt, der i fig. 1 ligger til højre for den første svingakse 11. Hvis der nu stadig er tryk på den første hydraUlcylinder 22, så at den indre am 9 forbliver i sin mellemstilling, og udliggeren 8's ydre am 10 klappes yderligere ind mod den 15 indre am 9 og mej eaggregatet 19 samtidig ved hjælp af den tredje hydraulcylinder 30 drejes i urvisernes retning i fig. 1 til en stilling, i hvilken mejeaggregatet 19 tilnærmelsesvis er parallel med den ydre del 17 af den ydre am 10, 20 så vil den ydre am 10 og mej eaggregatet 19 i forhold til den indre am 9 komme i en stilling, der allerede svarer til hvilestillingen for den ydre am 10 og mejeaggregatet 19. I denne stilling af delene har udliggeren 8 og mejeaggregatet 25 19 et fælles tyngdepunkt, der i fig. 1 befinder sig til venstre for den første svingakse 11, dvs. på traktorsiden, så at udliggeren 8 og mejeaggregatet 19 sammen fremkalder et drejningsmoment om den første svingakse 11, ved hjælp af hvilket de-30 lene vil søge at overgå til hvilestillingen.At the also shown in dotted lines the position of the outer am 10 and the mower assembly 19 in this intermediate position of the inner am 9, the boom 8 and the mower assembly 19 have a common center of gravity 10, which in fig. 1 is located to the right of the first pivot axis 11. If there is still pressure on the first hydraulic cylinder 22 so that the inner am 9 remains in its intermediate position and the outer am 10 of the excavator 8 is further folded into the internal am 9 and the assembly 19 simultaneously with the aid of the third hydraulic cylinder 30 is rotated clockwise in FIG. 1 to a position in which the mower assembly 19 is approximately parallel to the outer portion 17 of the outer am 10, 20 then the outer am 10 and the mower 19 relative to the inner am 9 will be in a position already corresponding to the rest position of the outer am 10 and the mower assembly 19. In this position of the parts, the boom 8 and the mower assembly 19 have a common center of gravity, which in fig. 1 is to the left of the first pivot axis 11, i. on the tractor side, so that the outrigger 8 and the mower assembly 19 together produce a torque about the first pivot axis 11, by means of which the parts will seek to transition to the rest position.

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7 Når nu den første hydraulcylinder 22 udluftes, vil konstruktionsenheden omfattende udliggeren 8 og mejeaggregatet 19 automatisk klappe ind i hvilestillingen i henhold til fig. 2, i hvilken 5 udliggeren 8 og mejeaggregatet 19 set i kørselsretningen indtager en stilling mellem enderne af hoveddrageren 4 i monteringsstativet 2, idet det lange ben 14 af den indre arm 9 stort set indtager en stilling parallelt med jorden under den første 10 svingakse 11, medens den ydre arm 10 er klappet mest mulig ind mod den indre arm 9 og befinder sig over den indre arm 9, og i hvilken stilling mejeaggregatet 19 har en stort set vandret stilling med med jorden vendende mejeværktøjer.7 Now that the first hydraulic cylinder 22 is vented, the structural unit comprising the boom 8 and the mower assembly 19 will automatically fold into the resting position according to FIG. 2, in which the boom 8 and the mower assembly 19, viewed in the direction of travel, assume a position between the ends of the main carrier 4 in the mounting frame 2, the long leg 14 of the inner arm 9 taking up a position substantially parallel to the ground beneath the first pivot axis 11, while the outer arm 10 is folded as far as possible towards the inner arm 9 and is located above the inner arm 9, and in which position the mower assembly 19 has a substantially horizontal position with mowing tools facing the ground.

15 I denne stilling ligger endestykket 15 af den indre arm 9 an mod et anslag 34, og alle dele af mejeapparatet søger også uden hydraulisk eller mekanisk lås at bibeholde denne hvilestilling.15 In this position, the end piece 15 of the inner arm 9 abuts against a stop 34, and all parts of the mower also seek to maintain this resting position without hydraulic or mechanical lock.

Til overføring af mejeapparatet fra hvile-20 stillingen i fig. 2 og 3 til arbejdsstillingen fik-seres ved passende betjening af den anden og den tredje hydraulcylinder 25 og 30 den ydre arm 10 af udliggeren 8 og mejeaggregatet 19 i deres til hvilestillingen svarende stillinger i forhold 25 til henholdsvis den indre arm 9 og den ydre arm 10, hvorefter den første hydraulcylinder 22, der befinder sig i en stilling under dødpunktstiliingen, påny aktiveres i retning af indtrækning af dens stempelstang. Herved overføres den indre arm 9 sammen med 30 den ydre arm 10 og mejeaggregatet 19 igen til mellemstillingen, i hvilken udliggeren 8 med mejeaggregatet 19 har et fælles tyngdepunkt, der bevirker, at disse dele igen søger at vende tilbage til deres hvilestilling. Ved at opretholde trykket i den førsteFor transferring the mower from the rest position of FIG. 2 and 3 to the working position are fixed by appropriate operation of the second and third hydraulic cylinders 25 and 30 the outer arm 10 of the boom 8 and the mower assembly 19 in their positions corresponding to the rest position relative to the inner arm 9 and the outer arm respectively. 10, after which the first hydraulic cylinder 22, which is in a position below the dead center position, is reactivated again in the direction of retraction of its piston rod. Hereby, the inner arm 9 together with the outer arm 10 and the mower assembly 19 are again transferred to the intermediate position, in which the outrigger 8 with the mower assembly 19 has a common center of gravity which causes these parts to again return to their resting position. By maintaining the pressure of the first

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8 hydraulcylinder 22 til opretholdelse af mellemstillingen betjenes nu først den anden hydraulcylinder 25 i retning af en udstrækning af dens stempelstang, hvorved den ydre arm 10 bringes til 5 den i fig. 1 punkteret viste stilling. Herefter kan også den tredje hydraulcylinder 3.0 aktiveres i retning af en indtrækning af stempelstangen, så at meje-aggregatet 19 ligeledes bringes til den med punkterede linier i fig. 1 viste stilling. I denne stilling 10 af delene er det samlede tyngdepunkt for udliggeren 8 og mejeaggregatet 19 beliggende væsentligt til højre i fig. 1 for den første svingakse 11, så at den første hydraulcylinder 22 nu kan udluftes. Herved klapper udliggeren 8 ud i retning af sin ar-15 bejdsstilling i fig. 1, idet den ydre arm 10 udstrækkes mere eller mindre i forhold til den indre arm 9 ved yderligere aktivering af den anden hydraulcylinder 25 alt efter behov. Endvidere kan den tredje hydraulcylinder 30 nu udluftes, så at 20 mejeaggregatet 19 under tyngdekraftens indvirkning igen indtager en stilling parallel med jorden.8 hydraulic cylinder 22 to maintain the intermediate position, the second hydraulic cylinder 25 is first operated in the direction of an extension of its piston rod, whereby the outer arm 10 is brought to the position shown in FIG. 1 dotted position shown. Thereafter, the third hydraulic cylinder 3.0 can also be actuated in the direction of retraction of the piston rod, so that the cutting unit 19 is also brought to the dotted line in FIG. 1. In this position 10 of the parts, the total center of gravity of the boom 8 and the mower assembly 19 is located substantially to the right in FIG. 1 for the first pivot axis 11 so that the first hydraulic cylinder 22 can now be vented. Hereby, the boom 8 folds out in the direction of its working position in FIG. 1, the outer arm 10 being extended more or less relative to the inner arm 9 by further activating the second hydraulic cylinder 25 as required. Furthermore, the third hydraulic cylinder 30 can now be vented so that, under the influence of gravity, the 20 mower assembly 19 again assumes a position parallel to the ground.

Ombukningen af den indre arm 9 i den viste retning tilvejebringer en lav placering af den indre arm 9 i hvilestillingen og en tilsvarende lav 25 placering af mejeapparatet i sin helhed, medens ombukningen på den anden side i arbejdsstillingen tilvejebringer en relativt stor frigang for udliggeren 8 i forhold til jorden, så at udliggeren kan stikkes ind over sten langs kanten eller andre dele, 30 såsom hegn, som der skal arbejdes ind over. Længden af den indre am 9's korte ben 13 er dimensioneret således, at det lange ben 14 i hvilestillingen netop ligger i en til transportkørsel tilstrækkelig af-The folding of the inner arm 9 in the direction shown provides a low position of the inner arm 9 in the resting position and a correspondingly low positioning of the mower in its entirety, while the folding on the other side of the working position provides a relatively large clearance for the boom 8 in relationship to the ground so that the outrigger can be inserted over stones along the edge or other parts, such as fences, to be worked over. The length of the short leg 13 of the inner am 9 is dimensioned such that the long leg 14 in the resting position lies precisely in a sufficient clearance for transport.

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9 stand over kørebanens plan. Ved ombukningen af endestykket 15 på den ene side og yderdelen 17 af den ydre arm 10 på den anden side opnås der i hvilestillingen af den ydre del 17 en stilling parallelt 5 med det lange ben 14 af den indre arm 9, dog med en afstand der stort set svarer til højden af meje-aggregatet 19.9 stands above the roadway plan. By folding the end piece 15 on one side and the outer part 17 of the outer arm 10 on the other hand, a position parallel to the long leg 14 of the inner arm 9 is obtained in the resting position of the outer arm 17, but at a distance of roughly corresponds to the height of the cutting unit 19.

Som det fremgår af fig. 3, er hoveddrageren 4 ud over hængselforbindelsen med lodret akse 5 10 forbundet med den på traktoren fast monterede tilslutningsdel 6 ved hjælp af en fjerde hydraulcylinder, der træder i funktion som overbelastningssikring, og som ved normale arbejdsbetingelser holder hoveddrageren 4 i den i fig. 3 viste stilling. Såfremt 15 der imidlertid under driften af mejeapparatet i dettes arbejdsstilling optræder modstande, der i fig.As shown in FIG. 3, in addition to the vertical axis 5 hinge connection 4, the main carrier 4 is connected to the connection part 6 fixed on the tractor by means of a fourth hydraulic cylinder which acts as overload protection and which, under normal working conditions, holds the main carrier 4 in the embodiment shown in FIG. 3. However, if during the operation of the mower in its working position, resistors appear in FIG.

3 er antydet med pilen 36, så kan hoveddrageren 4 sammen med mejeapparatet svinges ud i retning af pilen 37 om den lodrette akse 5 for at undgå beskadigel- 20 se af apparatet. Så snart modstanden bortfalder, kan hoveddrageren 4 samt de øvrige dele af mejeapparatet ved hjælp af den fjerde hydraulcylinder 35 igen føres tilbage til den i fig. 3 viste stilling i forhold til monteringsstativet 2's tilslutnings-25 del 6.3 is indicated by arrow 36, then the main carrier 4, together with the mower, can be swung out in the direction of arrow 37 about the vertical axis 5 to avoid damage to the apparatus. As soon as the resistance lapses, the main carrier 4 and the other parts of the mowing apparatus can again be returned to the one shown in FIG. 3 relative to the mounting part 2 of the mounting frame 2.

Den fjerde hydraulcylinder 35 er fortrinsvis forbundet med den første hydraulcylinder 22 på en sådan måde, at den første hydraulcylinder 22 aktiveres i retning af en opsvingning i tilfælde af en 30 af en modstand fremkaldt svingning af hoveddrageren 4 om den lodrette akse 5 og en deraf følgende udstrækning af stempelstangen i den fjerde hydraulcylinder 35.Preferably, the fourth hydraulic cylinder 35 is connected to the first hydraulic cylinder 22 in such a way that the first hydraulic cylinder 22 is actuated in the direction of an oscillation in the event of a resistance-induced oscillation of the main carrier 4 about the vertical axis 5 and a consequent extension of the piston rod in the fourth hydraulic cylinder 35.

1010

DK 154675BDK 154675B

Som det nærmere fremgår af fig. 4, er den første hydraulcylinder 22 en dobbeltvirkende cylinder og er ved hjælp af et første styreorgan 38 indrettet til efter ønske at aktiveres i begge ret-5 ninger, at udluftes i begge sider eller at låses hydraulisk.As will be more apparent from FIG. 4, the first hydraulic cylinder 22 is a double-acting cylinder and is arranged by means of a first control means 38 to be activated in both directions, to be vented on both sides or to be hydraulically locked.

Den anden hydraulcylinder 25 er også en dobbeltvirkende cylinder og er indrettet til ved hjælp af et andet styreorgan 39 efter ønske at 10 omstilles i aktiveringsretningen, at udluftes i begge sider eller eventuelt at låses hydraulisk.The second hydraulic cylinder 25 is also a double-acting cylinder and is adapted to be adjusted in the direction of activation by means of another control means 39, to be vented on both sides or possibly to be hydraulically locked.

Den tredje hydraulcylinder 30 er en enkeltvirkende cylinder og er indrettet til ved hjælp af et tredje styreorgan 40 at omstilles mellem 15 aktivering og udluftning, og kan endvidere efter ønske også overføres til en hydraulisk låsestilling.The third hydraulic cylinder 30 is a single-acting cylinder and is adapted to be switched between actuation and venting by means of a third control means 40, and can also be transferred to a hydraulic locking position as desired.

Den fjerde hydraulcylinder 35 er gennem et fjerde styreorgan 41 forbundet med den første hydraulcylinder 22 på en sådan måde, at tryk-20 siden 42 af den fjerde hydraulcylinder 35 står i forbindelse med den trykside 43 af den første hydraulcylinder 22, som aktiverer den første hydraulcy linder 22 i retning af en indtrækning af stempelstangen, dvs. i retning af opsvingning af 25 den indre am 9 af udliggeren 8. Dette fjerde styreorgan 41 omfatter en stopventil 44, en overtryksventil 45 og en kontraventil 46, der er indkoblet i parallelt i forhold til hinanden forløbende forgreninger i forbindelsesledningen mellem 30 hydraulcy lindrene 35 og 22.The fourth hydraulic cylinder 35 is connected through a fourth control member 41 to the first hydraulic cylinder 22 in such a way that the pressure side 42 of the fourth hydraulic cylinder 35 communicates with the pressure side 43 of the first hydraulic cylinder 22 which activates the first hydraulic cylinder. coils 22 in the direction of retraction of the piston rod, i. in the direction of pivoting 25 the inner am 9 of the outrigger 8. This fourth control member 41 comprises a stop valve 44, a pressure valve 45 and a check valve 46 which are connected in parallel to one another in the connecting line between the hydraulic cylinders 35 and 22nd

Endelig kan der være en yderligere hydraulcylinder 47 i form af en dobbeltvirkende cylinder, der er indrettet til at aktiveres ved hjælp af et yderligere styreorgan 48, og som er indrettet til 35 at forandre støttehjulet 7's højdestilling i forhold til hoveddrageren 4.Finally, there may be an additional hydraulic cylinder 47 in the form of a double-acting cylinder arranged to be actuated by an additional control means 48 adapted to change the height position of the support wheel 7 relative to the main carrier 4.

DK 154675 BDK 154675 B

11 I stedet for de i fig. 4 viste enkelte styreorganer kan der også være et centralt styreorgan/ der automatisk ved programmering styrer en styrerækkefølge for den første, den anden og den tredje hydraul-5 cylinder 22, 25 og 30, navnlig bevægelsesrækkefølgen ved indsvingning af delene til hvilestillingen og ved udsvingning af delene til en arbejdsstilling,.11 Instead of the ones in FIG. 4, there may also be a central control means, which automatically controls in programming a control order for the first, second and third hydraulic cylinders 22, 25 and 30, in particular the order of movement by swinging the parts to the rest position and by swinging the the parts for a posture,.

Claims

A slope cutting apparatus, which consists of a mounting rack (2) adapted to be connected to the front or rear of a farm tractor (1) or a similar working vehicle, and comprising a main carrier (4) comprising: is pivotally connected about a vertical axis to a connection part (6) of the mounting frame attached to the tractor, and as with a support wheel (7) supports on the ground, an outrigger (8) supported on the main support of the mounting frame, which is pivotable about a first horizontal pivot axis parallel to the direction of travel which comprises an inner 15 arm (9) adapted to pivot about the first pivot axis by means of a first hydraulic cylinder (22) and an outer arm ( 10) pivotally connected to the inner arm about a second pivot axis parallel to the first pivot axis by a second hydraulic cylinder (25) and a mower assembly (19) hingedly connected to the free end of the the outer arm about one with d a first pivot axis parallel, third pivot axis, and pivotable by a third hydraulic cylinder 25 (30), characterized in that the first pivot axis (11) is arranged in direct contact with the end of the device facing the transverse direction of travel (3) align the main support (4) of the mounting frame (2) with the inner arm (9) of the boom (8). is bent in L-shape, that the first hydraulic cylinder (22) is partly connected to the main support (4) of the mounting frame (4) DK · at the same height as the first pivot axis (11) and partly to the inner arm ( 9) in the area of its folding, and that the boom (8) and the mower assembly (19) 5 are arranged to be pivoted to a rest position seen in the direction of travel (3) between the ends of the main support (4) of the mounting frame (2), in which When a long leg (14) of the inner arm (9) is in position with the ground substantially parallel to position 10 below the first pivot axis (11), while the outer arm (10) takes a folding against the inner arm (9) position above this, and the mower assembly (19) occupies a substantially horizontal position with mowing tools facing the ground.

Apparatus according to Claim 1, characterized in that a short leg (13) of the inner arm (9) of the outrigger forms an angle of approximately 90 ° with the long leg (14) of the arm.

Apparatus according to claim 1 or 2, characterized in that the long leg (14) of the inner arm (9) has an upwardly-folded end piece (15) on the leg towards the outer arm (9) in the resting position (8). 10) facing side.

4. Apparatus according to claim 3, characterized in that the long leg (14) of the inner arm (9) of the boom (8) forms an angle of approx. 120-15Ώ0 with end piece (15).

Apparatus according to any one of claims 1 to 4, characterized in that the outer arm (10) of the boom (9) has an outer part (17) bent against the mower assembly (19). DK 154675 B 14

Apparatus according to claim 5, characterized in that the angle between the inner part (18) and the outer part (17) of the outer am (10) in the resting position of the boom (8) gives the outer part a substantially parallel to the ground position at a distance above the long leg (14) of the inner arm (9), which distance corresponds substantially to the height of the cutting unit (19).

Apparatus according to any one of the preceding 10, characterized in that the first hydraulic cylinder (22) is in a dead center position for its points of attack (23, 24) on the main support (4) of the mounting frame (2) and on the inner am ( 9) with respect to the first pivot axis (11), the inner am an approximately vertically upwardly directed intermediate position.

Apparatus according to claim 7, characterized in that the common center of gravity of the boom (8) and the mower assembly (19) in the intermediate position of the inner arm 20 (9), at an unchanged position for all parts of the outer am (10) in relation to the inner am and of the center assembly relative to the outer am, lies on the side of the towing vehicle of the first pivot axis (11).

Apparatus according to claim 7, characterized in that the first hydraulic cylinder (22) is formed of a double acting cylinder known per se and is arranged by means of a first control means (38) so that the pressure supply as desired can be switched so that both sides can be vented or hydraulically locked. DK 154675B

Apparatus according to any one of claims 1 to 9, characterized in that the second hydraulic cylinder (25) is in the form of a double acting cylinder known per se and is adapted for use by another control means (39) according to desire to be switched in the pressure supply direction, vented in both sides or to be hydraulically locked.

Apparatus according to any one of the preceding claims, characterized in that the third hydraulic cylinder (30) is in the form of a known single acting cylinder and is adapted to be switched between pressure supply by means of a third control means (40). and venting.

Apparatus according to any one of the preceding claims, characterized in that a single-acting, fourth hydraulic cylinder (35) is provided as overload protection between the main carrier (4) and the connection part (6) of the mounting frame (2).

Apparatus according to claim 12, characterized in that the pressure side (42) of the fourth hydraulic cylinder (35) is connected through a fourth control means (41) to the pressure side (43) of the first hydraulic cylinder (22) which pressure supply causes oscillation upward of the inner arm 25 (9) of the boom (8).

Apparatus according to claim 13, characterized in that the control means (41) comprises in parallel connecting lines a stop valve (44), a check valve (46) and a pressure relief valve (5).

Apparatus according to any one of the preceding claims, characterized by a central control device for automatically programming the control order of the first, second and third hydraulic cylinders (22, 25, 30).