NO822448L

NO822448L - DEVICE FOR A SUPPORT STAND FOR A Pull-up bar for towed agricultural implements and the like

Info

Publication number: NO822448L
Application number: NO822448A
Authority: NO
Inventors: Ulf Einarsson
Original assignee: Katrineholms Verkstads Ab
Priority date: 1980-12-01
Filing date: 1982-07-15
Publication date: 1982-07-15
Also published as: SE424976B; SE8008416L; DK328982A; EP0073200A1; WO1982001855A1

Description

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Den foreliggende oppfinnelsen vedrører en anordning frThe present invention relates to a device for

å heve og senke en støttefot til ei trekkstang til slepte jordbruksredskaper. En utførelsesform for en slik anordning er tidligere kjent fra det svenske patentskriftet 353 68 7, som viser og beskriver en anordning hvor bjelken til en halv-slepevogn og liknende trekk-kjøretøy er utstyrt medj en bærestøtte, som er plassert ved bjelken og er dreibar fra en stilling som støtter bjelken til uvirksom stilling under på-virkning av en hevestang, hvilende er plassert slik at den påvirkes av traktoren og den andre enden svinger bærestøtten. Anordningen omfatter også organ for å låse bærestøtten i nedsenket stilling. Anordningen i samsvar med patentskriftet har tydeligvis vært beheftet med ulemper, da den ikke erj kommet i almen bruk. , to raise and lower a support leg for a drawbar for towed agricultural implements. An embodiment of such a device is previously known from the Swedish patent document 353 68 7, which shows and describes a device where the beam of a semi-trailer and similar towing vehicle is equipped with a support, which is placed at the beam and is rotatable from a position which supports the beam to an inactive position under the influence of a lifting rod, resting is positioned so that it is affected by the tractor and the other end swings the support. The device also includes means for locking the support in the lowered position. The device in accordance with the patent document has clearly been subject to disadvantages, as it has not come into general use. ,

Anordningen i samsvar med den foreliggende oppfinnelsen har fått den utførelsesform og de trekk som framgår av de vedlagte patentkravene. The device in accordance with the present invention has been given the embodiment and the features that appear from the attached patent claims.

Oppfinnelsen er illustrert i den vedlagte tegningen, i hvor The invention is illustrated in the attached drawing, in which

i in

fig. 1 skjematisk viser et sideriss av en utførelsesf(orm av fig. 1 schematically shows a side view of an embodiment of

,ei trekkstang med nedsenket støttefot, og,a drawbar with submerged support foot, and

fig. 2 viser samme trekkstang med hevet støttefot. !fig. 2 shows the same drawbar with a raised support foot. !

Ei trekkstang 2 er i sin frie ende utstyrt med e'r trekk-løkke 3 og på undersida med et øre med en svingetapp 15,' A pull rod 2 is equipped at its free end with a pull loop 3 and on the underside with an ear with a swivel pin 15,'

i in

på hvilken en støttefots 1 øvre ende er dreibart plassert. Støttefoten 1 er i sin øvre ende utstyrt med ei nese 16(som ved nedsenket støttefot er rettet bakover og utover trekkstanga 2 og som ved sin øvre kants bakre ende er utstyrt med en tilbakerettet ans^lagsknast 17. Ei hylse 14 for jet låsestempel 13 er plassert på nesa 16 ved dennes frie kant, on which the upper end of a support foot 1 is rotatably placed. The support foot 1 is equipped at its upper end with a nose 16 (which, when the support foot is lowered, is directed backwards and beyond the drawbar 2 and which, at the rear end of its upper edge, is equipped with a backward-directed stop cam 17. A sleeve 14 for the jet locking piston 13 is placed on nose 16 at its free edge,

slik at låsestempelet 13 ligger vinkelrett mot støttefoten so that the locking piston 13 is perpendicular to the support foot

—L, i.åcctmpsipt 13 er plassert slik at det kan forskyves —L, i.åcctmpsipt 13 is positioned so that it can be displaced

mellom en grensestilling der dens ene ende stikker ut av hylsa 14 og utenfor nesas 16 bakre kant og en annen gren Be-stilling der samme ende ligger innenfor nesas 16 bakre kmt. Den er i sin andre ende, som alltid ligger utenfor hylsa 14, ved hjelp av et ledd forbundet med den ene enden på ei s:ang 11, hvis andre ende ved hjelp av et ledd 10 er forbundet med den frie enden på den ene ved hevet støttefot oppoverret:ete arrn^ 6 på ei toarmet hevestang 6,7. Denne er dreibar om et ledd 8 i trekkstangas 2 frie ende. Dens andre arm 7 er utstyrt med ei vinkelrett ^stående plate 21, som er plassert slik at den ved hevet støttefot 1 ligger an mot trekkløkka 3 og ir utstyrt med en gjenivomgående åpning 9, som i denne stillingen motsvarer og er koaksial med trekkløkka 3. E'. trekkfjær 20 er plassert mellom trekkstanga 2 og armen 5 between a limit position where one end protrudes from the sleeve 14 and outside the rear edge of the nose 16 and another branch Be position where the same end lies within the rear edge of the nose 16. It is at its other end, which always lies outside the sleeve 14, by means of a link connected to one end of a rod 11, the other end of which is connected by means of a link 10 to the free end of one by raised support foot upward:ete arrn^ 6 on a two-armed lifting bar 6,7. This can be turned about a joint 8 in the free end of the tie rod 2. Its other arm 7 is equipped with a perpendicular plate 21, which is positioned so that when the support foot 1 is raised, it rests against the draw loop 3 and is equipped with a recirculating opening 9, which in this position corresponds to and is coaxial with the draw loop 3. E'. tension spring 20 is placed between tension rod 2 and arm 5

slik at den prøver å dra armen bakover.so that it tries to pull the arm backwards.

Anordningen fungerer på følgende måte:The device works as follows:

Ved senket støttefot 1 (fig- 1) er armen 6 dradd bakover,When the support foot 1 is lowered (fig. 1), the arm 6 is pulled backwards,

slik at plata 21 står på skrå oppover i forhold til trekc-løkka 3. Stanga 11 er herved brakt til å skyve ut låsestempelet 13. Nesas 16 anslagsknast 17 ligger an på en andre anslagsknast 18, som stikker ut fra et øre 19 på trekkstangas 2 underside og den enden av låsestempelet 13 som stikker ut av hylsa 14 ligger på anslagsknastens 18 underside, slik at støttefoten 1 er låst mot svinging både fram- og bakover. so that the plate 21 is inclined upwards in relation to the drawc loop 3. The rod 11 is thereby brought to push out the locking piston 13. The stop cam 17 of the nose 16 rests on a second stop cam 18, which protrudes from an ear 19 on the drawbar gas 2 underside and the end of the locking piston 13 which protrudes from the sleeve 14 lies on the underside of the stop cam 18, so that the support foot 1 is locked against swinging both forwards and backwards.

Når trekkløkka 3 skal koples til en hev- eller senkbar trekkrok 4 på en traktor eller annet trekkjøretøyp rygges dette til trekkroken 4 kommer midt under trekkløkka 3, hvoretter trekkroken 4 heves slik at den griper inn i trekkløkka 3 og løfter denne ved hjelp av trekkstanga 2 When the towing eye 3 is to be connected to a raising or lowering towing eye 4 on a tractor or other towing vehiclep, this is reversed until the towing eye 4 comes in the middle under the towing eye 3, after which the towing eye 4 is raised so that it engages in the towing eye 3 and lifts this with the help of the drawbar 2

slik at støttefoten 1 løftes fra bakken. Herved kommer spissen på plata 21 snart til å treffe ei fast plassert anslagsflate 5 midt over trekkroken 4 på traktoren. Ved fortsatt løfting, vil plata 21 presses nedover mot anslagsflata 5 og vanligvis gripe inn i en åpning i denne. so that the support foot 1 is lifted from the ground. Hereby, the tip of the plate 21 will soon hit a firmly placed impact surface 5 in the middle above the drawbar 4 of the tractor. With continued lifting, the plate 21 will be pressed downwards against the stop surface 5 and usually engages in an opening in this.

Når plata 21 presses nedover, drar den armen 6 framovsr. Herved drar den med seg stanga 11. Det første som utløsss herigjennom er at låsestempelet 13 dras inn i hylsa 14 When the plate 21 is pressed down, it pulls the arm 6 forwards. This pulls the rod 11 with it. The first thing that is triggered by this is that the locking piston 13 is pulled into the sleeve 14

til den når sin indre grensestilling. Ved fortsattuntil it reaches its internal limit position. By still

løfting vil stanga 11, som må være forbundet med armen 6 lifting will be the rod 11, which must be connected to the arm 6

slik at den i alle stillinger ligger ovenfor leddet 15, over låsestempelet 13, hylsa 14 og nesa 16 svinge opp støttefoten 1, tilbake inntil den, samtidig med at plata legges an mot trekkløkka 3, slår mot anslagsknasten 18. so that in all positions it lies above the joint 15, above the locking piston 13, the sleeve 14 and the nose 16 swing up the support foot 1, back until it, at the same time as the plate is placed against the pull loop 3, hits the stop cam 18.

Claims

1. Device at a support (I)"fof. éiD trekkstaiig) for towed agricultural implements, to raise the support foot (11 when a towing loop (3) on the towing bar (2) is placed around a raising or lowering towing hook (4) on a tractor :øy XrtKK-

and the hook (4) is raised in relation to a fixed impact surface (5) on the vehicle and to lower the support foot (1) when the hook (4) is lowered in relation to the impact surface (5) comprising a two-armed lifting rod (6,7) which can be rotated about a axle pin (8) in the free end of the tie rod (2) and one arm (7) of which carries a plate (21), which in a limit position corresponding to the raised support foot (1) rests against the draw loop (3) and in another limit position corresponding to the lowered support foot (1) are correct: diagonally up from the towing loop (3) and is positioned so that when the towing hook (4) raises the towing loop (3) it hits the stop surface (5) and is brought by this to rest against the towing loop (3) and thereby swing the lifting rod (6, 7). characterized in that the lifting rod arm (6) is articulated at its free end 3 with one end of a rod (11), where; the other end is articulated with a locking piston (13), which is placed in a sleeve (14) which is firmly positioned perpendicular to the support foot (1) on the free end of a protruding nose (16) next to the support foot (1) which is connected to the tie rod (2) with a link (15), where the locking piston (13) is positioned so that it can be moved between a limit position where the free end of the locking piston (13) protrudes from the sleeve (14) and a second limit position , where the free end of the locking piston (13) lies flush with the edge of the sleeve (14) and that the pull rod (2) is equipped on its underside with an ear (19) with a stop pin (18) protruding from the side of the pull rod (2) , whose underside is positioned sip V that it limits the elevation of the support foot (1) and that when the support foot (1) is lowered, it rests against the end of the locking piston (13) that protrudes from the sleeve (14) so that the support foot (1) is locked in the lowered position and that the nose (16) at its free end is equipped with a stop cam (17) positioned so that this, upon impact when lowering, the foot is in a vertical position, rests against the stop cam (18) and limits the support foot (1)'s swing and, together with the locking piston (13), locks this in a vertical position.

2. Device in accordance with claim 1, characterized in that the plate (21) is placed almost at a right angle with the lifting rod arm (6) and that its length is adapted so that the rod (11), in the support foot (1) is in a vertical position, will lie above the supporting foot joint (15).

3. Device in accordance with claim 1 or 2, characterized in that a tension spring (20) is placed in such a way between the tension rod (20) and the lever arm (6) that it, in that tension hook (4) and thus also the tension loop (3) is lowered, causes the arm (6) to swing back and via the rod (11) swing the support foot towards the vertical position and that, when this is achieved, push the locking piston (13) under the stop cam (18).