NO794040L

NO794040L - Interlocking devices.

Info

Publication number: NO794040L
Application number: NO794040A
Authority: NO
Inventors: Hans Erik Ivars
Original assignee: Fiskars Ab Oy
Priority date: 1978-12-29
Filing date: 1979-12-11
Publication date: 1980-07-01
Also published as: DE2949696A1; FI58245C; DK546279A; FI784039A; SE7910669L; FI58245B; GB2038601A; FR2445099A1

Description

Foreliggende oppfinnelse angår en -låseanordning ved med utløsningsmekanisme forsynt vekselplog av den type hvor indre ende av skjærrammen under fjærbelastning ligger an mot et parti av plogrammen via to i vertikal avstand fra hverandre' beliggende og innbyrdes uavhengige leddsystem som tillater en oppsving- The present invention relates to a -locking device for a reversible plow equipped with a release mechanism of the type where the inner end of the cutting frame under spring load rests against a part of the plow frame via two vertically spaced and mutually independent joint systems which allow an upswing-

ning i et fortrinnsvis vertikalt plan av skjærrammen i forhold til plogrammen ved det øvre leddsystem under påvirkning av en tilstrekkelig stor kraft F rettet mot det nedre skjærets spiss. ning in a preferably vertical plane of the cutter frame in relation to the plow frame at the upper joint system under the influence of a sufficiently large force F directed towards the tip of the lower cutter.

En vekselplog av ovennevnte type fremgår skjematisk av vedlagte tegningsfigurer 1 og 2 som viser henholdsvis en veksel-plogkonstruksjon sett fra siden og ovenfra. A reversible plow of the above-mentioned type can be seen schematically from the attached drawings 1 and 2, which respectively show a reversible plow construction seen from the side and from above.

Mellom punktene c og D i utløsningsmekanismen 1 - 6 er innsatt et trykkelement 1 som via en arm 2 avstedkommer en trekk-kraft P i trekkstangen 3 (fig. 2). Denne kraft P opptas av sk'jærrammens. 13 svingtapper 4 og 4' som ligger an mot motsvarende svingvegger 5 og 5<1>på plogrammen 7 (fig.l). Derved er holdemomentet = Pxa>Fxb-Gxc. Gjennom spennbolten 6 kan trekkstangkraften (holdekraften) P økes eller minskes og skjæret bringes til å utløse ved ulike store krefter F på skjær-spissen 8<1>. Skjæret utløses når momentet F x b blir større enn sum-momentet P x a + G x c, der G er skjærrammens 13 tyngde og c er den horisontale avstand fra det øvre leddsystems sving- Between points c and D in the release mechanism 1 - 6, a pressure element 1 is inserted which, via an arm 2, produces a pulling force P in the pull rod 3 (fig. 2). This force P is absorbed by the shear frame. 13 pivot pins 4 and 4' which rest against corresponding pivot walls 5 and 5<1> on the plow frame 7 (fig.l). Thereby the holding torque = Pxa>Fxb-Gxc. Through the tension bolt 6, the drawbar force (holding force) P can be increased or decreased and the blade can be triggered by various large forces F on the blade tip 8<1>. The shear is triggered when the moment F x b becomes greater than the sum moment P x a + G x c, where G is the weight of the shear frame 13 and c is the horizontal distance from the upper joint system's swing-

aksel 4 til skjærrammens 13 tyngdepunkt Tp. axle 4 to the shear frame's 13 center of gravity Tp.

Ved utløsningen svinger skjærrammen 13 om den øvre svingtapp 4 og beveger seg utover i forhold til trekkstangen 3 som i punkt 14 er dreibart festet til plogrammen 7. På denne måte avstedkommes via armen 2 en sammentrykning av trykkelementet 1. Dette er slik konstruert at den kraft som elementet 1 gir, avtar When released, the cutting frame 13 swings around the upper pivot pin 4 and moves outwards in relation to the drawbar 3 which is rotatably attached to the plow frame 7 at point 14. In this way, a compression of the pressure element 1 is achieved via the arm 2. This is designed in such a way that the force which element 1 provides, decreases

jo mer elementet sammentrykkes. Derved avtar trekkstang-the more the element is compressed. Thereby, drawbar decreases

kraften P som trykker skjærrammens 13 indre ende mot plogrammen 7. Derved øker imidlertid faren for at skjærrammens 13 svingtapper 4 og 4'dreies bort fra sine svingvegger henholdsvis 5 og 5', f.eks. på grunn av en sidekraft Q (fig. 2), hvilket ville medføre at ploganordningen ble funksjonsudyktig. the force P which presses the inner end of the cutter frame 13 against the plow frame 7. This, however, increases the risk that the pivot pins 4 and 4' of the cutter frame 13 are turned away from their pivot walls 5 and 5' respectively, e.g. due to a side force Q (fig. 2), which would cause the plow device to become inoperable.

Foreliggende oppfinnelse har som formål å råde bot påThe purpose of the present invention is to remedy

denne ulempe og på en enkel og sikker måte å tilveiebringe en låsing av skjærrammen til plogrammen også i skjærrammens utløs-nings st ill ing . this disadvantage and in a simple and safe way to provide a locking of the cutter frame to the plow frame also in the cutter frame release position.

Oppfinnelsen er basert på den ide at et tyngdekraftstyrt klinksystem automatisk låser det øvre leddsystem slik at en utilbørlig svingning av skjærrammen i sideretning forhindres. The invention is based on the idea that a gravity-controlled latch system automatically locks the upper joint system so that an undue swing of the shear frame in the lateral direction is prevented.

Nærmere bestemt karakteriseres oppfinnelsen hovedsakelig ved at låsanordningen omfatter to klinksystem som i plogens arbeidsstilling er beliggende vertikalt over hverandre på hver side av den gjennom skjærrammen gående geometriske lengdeaksel, at klinksystemene er formet som i vertikalplanets svingbare hevstangelementer forsynt med hver sin i låsestilling om et anslag gripende krok eller lignende, og at hevstangelementene styres slik av sin respektive vektbelastning at alltid det øvre hevstangelement er svingt til låsestilling og det undre er frikoblet. More specifically, the invention is mainly characterized by the fact that the locking device comprises two latch systems which, in the plow's working position, are located vertically above each other on either side of the geometric longitudinal axis passing through the shear frame, that the latch systems are shaped as in the vertical plane's pivoting lever elements, each provided with one in the locking position about a stop gripping hook or similar, and that the lever elements are controlled in such a way by their respective weight load that the upper lever element is always swung to the locking position and the lower one is disengaged.

Ved bestemmelse av beskyttelsesomfanget bør imidlertid foreliggende patentbeskrivelse og vedlagte tegninger i samsvar' med patentlovens bestemmelser i sin helhet tas i betraktning. When determining the scope of protection, however, the present patent description and attached drawings in accordance with the provisions of the Patent Act should be taken into account in their entirety.

Den største fordelen med låsanordningen ifølge oppfinnel- ; The greatest advantage of the locking device according to the invention;

sen er at den ved sin tyngdekraftstyring er helautomatisk og samtidig idiotsikker. The advantage is that it is completely automatic and at the same time foolproof due to its gravity control.

Oppfinnelsen skal i det følgende beskrives nærmere under henvisning til vedlagte tegningsfigurer 3 og 4 som i vertikal-snitt viser to utføringsformer av låsanordningen ifølge oppfinnelsen. In the following, the invention will be described in more detail with reference to the attached drawings 3 and 4, which in vertical section show two embodiments of the locking device according to the invention.

Låsanordningen ifølge fig. 3 omfatter i prinsipp to klinksystem 9 - 12 og 9' -12', ett i tilknytning til hvert ledd- ' system henholdsvis 4, 5 og. 4' , 5'. Hvert klinksystem består av en eller to hovedsakelig vertikalt svingbare klinker 9, 9' og motsvarende et eller to tapporgan 10, 10'.Klinkenes 9, 9' dreieaksler 4, 4' og motsvarende tapporgan 10, 10' befinner seg herunder på ulike sider av kontaktflatene mellom skjærrammens 13 indre ende og plogrammen 7. The locking device according to fig. 3 in principle comprises two latch systems 9 - 12 and 9' -12', one in connection with each link system, respectively 4, 5 and. 4', 5'. Each latch system consists of one or two mainly vertically pivotable latches 9, 9' and corresponding one or two pin members 10, 10'. the contact surfaces between the inner end of the cutting frame 13 and the plow frame 7.

Klinkene 9, 9' er forsynt med hver sin motvekt bestående av en ytre kuleformet del 11, 11' og en indre skaftdel 12, 12'. The latches 9, 9' are each provided with a counterweight consisting of an outer spherical part 11, 11' and an inner shaft part 12, 12'.

Motvektene 11, 12, 11', 12' danner sammen med sine motsvarende klinker 9, 9' toarmede hevstenger. på grunn av tyngdekraftens virkning på motvekten 11, 12 står den øvre klinke 9 alltid i låseinngrep med tapporganet 10. På tilsvarende måte holdes alltid den nedre klinke 9' ute av inngrep med sitt motsvarende tapporgan 10'. Ved dette arrangement vil det øvre klinksystem 9, 10.i sin låste stilling hindre en utilbørlig svingning av The counterweights 11, 12, 11', 12' together with their corresponding clinkers 9, 9' form two-armed lifting rods. due to the effect of gravity on the counterweight 11, 12, the upper pawl 9 is always in locking engagement with the pin member 10. In a similar way, the lower pawl 9' is always kept out of engagement with its corresponding pin member 10'. With this arrangement, the upper latch system 9, 10. in its locked position will prevent an undue swing of

skjærrammen 13 i sideretning.the cutting frame 13 in the lateral direction.

I den beskrevne utførings form er klinkene 9, 9' opplagretIn the described embodiment, the latches 9, 9' are stored

i skjærrammen 13, mens tapporganene lo og 10, befinner seg på plogrammen 7. Arrangementet kan selvsagt også være motsatt, nemlig slik at klinkene 9 og 9' er opplagret i plogrammen 7, in the shear frame 13, while the pin members lo and 10 are located on the plow frame 7. The arrangement can of course also be the opposite, namely so that the rivets 9 and 9' are stored in the plow frame 7,

mens tapporganene lo, 10' befinner seg på skjærrammen 13.while the pin members lo, 10' are located on the shear frame 13.

I det tilfelle at hvert klinksystem består av to klinkerIn the event that each rivet system consists of two rivets

9 og 9' henholdsvis to tapporgan 10 og 10', så er klinkene hensiktsmessig anordnet ved yttersidene av skjærrammens 13 9 and 9', respectively two pin members 10 and 10', then the latches are suitably arranged on the outer sides of the shear frame's 13

indre ende. Hvis derimot hvert klinksystem består bare av en klinke 9, 9' og et tapporgan 10, 10' er klinkene 9, 9' og tapporganene 10, 10' hensiktsmessig anordnet i et vertikalplan som ligger innenfor yttersidene av skjærrammens indre ende. inner end. If, on the other hand, each latch system consists only of a latch 9, 9' and a pin member 10, 10', the latches 9, 9' and the pin members 10, 10' are conveniently arranged in a vertical plane that lies within the outer sides of the shear frame's inner end.

I den viste utføringsform består leddsystemene 4, 5 og 4',In the embodiment shown, the joint systems 4, 5 and 4' consist of

5' dels av to horisontale svingtapper 4, 4' som er beliggende i avstand over hverandre ved indre ende av skjærrammen 13, og dels av to motsvarende horisontale svingvegger 5, 5' anordnet ved plogrammen 7. 5' partly by two horizontal pivot pins 4, 4' which are located at a distance above each other at the inner end of the shear frame 13, and partly by two corresponding horizontal pivot walls 5, 5' arranged at the plow frame 7.

En spesielt fordelaktig utførings form oppnås dersom klinkenes 9 og 9' aksler 4 faller sammen med nevnte svingtapper (fig. 3)". Derved skjer låsingen automatisk ved den øvre svingtapp.4 når plogen svinges fra den ene pløyestilling til den andre. på tilsvarende måte skjer samtidig en opplåsing av klinken 9' ved den nedre svingtapp 4<1>. A particularly advantageous design is achieved if the shafts 4 of the rivets 9 and 9' coincide with the aforementioned pivot pins (fig. 3)". Thereby the locking occurs automatically at the upper pivot pin 4 when the plow is pivoted from one plowing position to the other. in a similar way an unlocking of the latch 9' at the lower pivot pin 4<1> occurs at the same time.

Det kan også nevnes at klinksystemet 9, 10 og 9<1>, 10<1>er hensiktsmessig speilsymmetrisk anordnet i forhold til et horisontalt midtplan som går gjennom skjærrammen 13 og plogrammen 7. It can also be mentioned that the latch system 9, 10 and 9<1>, 10<1> is appropriately mirror-symmetrically arranged in relation to a horizontal center plane that passes through the shear frame 13 and the plow frame 7.

Figur 4 viser en alternativ utføringsform av låsanordningen ifølge oppfinnelsen. Her er klinkene utformet som enarmede hevstenger som i sin øvre stilling på grunn av tyngdekraftens G påvirkning er innrettet til med sin krokformede ende 9 å Figure 4 shows an alternative embodiment of the locking device according to the invention. Here, the latches are designed as one-armed levers which, in their upper position due to the influence of gravity G, are aligned with their hook-shaped end 9 to

gripe om et i plogrammen 7 anordnet anslag lo. I sin nedre stilling frigjøres klinken tilsvarende på grunn av tyngdekraftens påvirkning fra sitt inngrep med anslaget 10'. grasp a stop arranged in the plow frame 7 lo. In its lower position, the latch is correspondingly released due to the influence of gravity from its engagement with stop 10'.

Claims

1.L ridge arrangement (9-12, 9'-12') by a reversible plow (7,8,8',13) equipped with a release mechanism (1-6) of the type where the inner end of the cutting frame (13) under spring load (1 ) is abutted against a part of the plow frame (7) via two vertically spaced and mutually independent joint systems (4,5 and 4', 5') which allow an upswing in a preferably vertical plane of the cutting frame (13) in relation to the plow frame (7) at the upper joint system (4,5) under the influence of a sufficiently large force F directed towards the tip of the lower blade (8'), characterized in that the locking device comprises two latch systems (9-12 and 9'- 12') which in the plow's working position are located vertically above each other on each side of the geometric longitudinal axis passing through the cutting frame (13), that the rivet systems (9-12 and 9'-12') are shaped like lever elements pivotable in the vertical plane (9 ,12,9 <1> ,12') provided with each in the locking position about a stop (10,10') gripping hook ■ (9,9') or similar, and that lever member the ends (9, 12, 9',12') are thus controlled by their respective weight load (e.g. 11,11') that the upper lever element (9,12) is always turned to the locking position and the lower one (9',12') is disengaged.

2.L locking device according to claim 1, characterized in that the latch systems (9,12,9',12') are arranged in connection with each joint system respectively (4,5 and 4',5') and each consists of at least one mainly vertically pivotable latch respectively (9 and 9') or the like, with said latch's (9, 9') pivot shaft (4) and corresponding stop (10, 10<1> ) located on different sides of the contact surface between the shear frame's (13 ) inner end and the plow frame (7) and the latch (9, 9') are provided with a counterweight (11,12,11',12') which together with the latch (9,9') forms a two-armed lever, so that the latches (9,9') always the upper one or the upper ones through the influence of gravity on the counterweight (11,12) is in locking engagement with a corresponding stop (10), while the lower one or the lower ones (9') are always kept out of engagement with a corresponding stop (lo <1> ), whereby the upper latch system (9,10) is in its locked position prevents undue swinging of the cutting frame (13) in the lateral position (fig. 3).

3. Locking device according to claim 2, characterized in that the latch systems (9,10 and 9 <1>,10 ') are mirror-symmetrically arranged in relation to a horizontal center plane through the shear frame (13) and the plow frame (7).

4. Locking device according to claim 2, characterized in that the latches (9, 9') are stored in the shear frame (13), while the stops (10, 10') are located on the plow frame (7).

5. Locking device according to claim 2, characterized in that the latches (9, 9') are stored in the plow frame (7), while the stops (10 , 10') are located on the cutting frame (13).

6. Locking device according to claim 2, characterized in that each latch system (9-12 and 9'-12') consists of two latches (9 and 9') and two stops (lo and 10') respectively, the latches (9 and 9' ) is stored on the outer sides of the cutting frame (13) inner end.

7. Locking device according to claim 2 where each latch system (9, 10 and 9'10') consists of a latch (9, 9') and a corresponding stop (10, 10'), characterized in that the latches (9, 9') and the stops (10, 10') are arranged in a vertical plane within the outer sides of the cutting frame (13).

8. Locking device according to claims 4 and 6, where the joint systems (4, 5 and 4', 5') consist of horizontal pivot pins (4) arranged at a distance above each other at the inner end of the cutting frame (13) and correspondingly arranged at the plow frame (7) horizontal pivot walls (5), characterized in that the rivets' (9, 91) shafts (4) coincide with said pivot pins.

9. Lock device according to claim 2, characterized in that the counterweights consist of an outer spherical part (11, 11') and an inner shaft part (12, 12').

10. Locking device according to claim 1, characterized in that the stops (10, 10') are formed by a pin or the like (Fig. 3).

11. Locking device according to claim 1, characterized in that the latch systems (9, 12, 9', 12') are arranged in connection with each joint system (4, 5 and 4', 5') respectively and each consists of at least one mainly vertical pivotable latch respectively (9 and 9') or the like, with said latch's (9, 9') pivot shaft (4) and corresponding stop (10, 10<1> ) located on different sides of the contact surface between the inner end of the cutting frame (13) and the plow frame (7) and the latch (9, 9') form a single-arm lever, so that of the latches (9, 9'), the upper one or the upper ones (9) are always in locking engagement with the corresponding abutment (10) through the influence of gravity G, while always the lower one or the lower ones (9') are kept out of engagement with corresponding stops (lo <1> ) in a corresponding way, whereby the upper latch system (9, 10) in its locked position prevents undue swinging of the cutting frame (13) in the lateral direction (fig. 4).