SE194059C1

SE194059C1 -

Info

Publication number: SE194059C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: C V Larsson Foreliggande uppfinning a-vser en anordning for valbar reglering av bandspanningen hos halvbandstraktorer och liknande fordon med bandboggi, vid vilken boggins frighende bandhj ul medelst ett lanksystem Or vertikalt svanghart forbundet med fordonets ram e. d., vilket lanksystem innefattar tvh lankarmar, som fran var sin, Over resp. under det drivande bandhjulets axel belagna ledpunkter i ett taste i ramen stra&a sig till ett lankstycke, vilket uppbar det frighende bandhjulet. Inventor: CV Larsson The present invention relates to a device for selectively regulating the belt tension of semi-belt tractors and similar vehicles with belt bogie, in which the bogie's freewheeling belt wheel by means of a link system is vertically pivotally connected to the vehicle frame, which link system comprises two link arms. was his, Over resp. below the axis of the driving pulley coated articulated points in a key in the frame extend to a long piece, which carried the freezing pulley.

Gangse bandstrackningsanordningar bygga i regal pA anvandandet av spannskruvar och liknande, vilket gOr bandstrackningen till ett saval omstandligt som besvarligt foretag, speciellt som olika omstandigheter kunna pakalla ofta Aterkommande andringar i bandspanningen. Gangse belt tensioning devices are based on the use of clamping screws and the like, which makes the belt tensioning of a saw both cumbersome and responsible, especially as different circumstances can often cause recurring changes in the belt tension.

Bandstraekningsanordningen enligt uppfinningen medger en ytterst bekvam och snabb reglering av bandspanningen och utmarker sig i huvudsak dirav, att lanksystemet Or av parallellogramtyp med de hada mellan banddrivhjulet och det frighende bandhjulet gaende lankarmarna belagna i huvudsak parallellt och att den ena av dessa lankarmar Or reglerbar till sin langd och bestar av en hydrauliskt paverkbar tryckcylinder, varvid axeln till det frigaende bandhjulet ligger i linje med eller ph kortare avstand Iran den av en tryekcylinder besthende lankarmens ledpunkt i lankstycket On ledpunkten for den andra lankarmen, sO att en Caning av den av en tryekeylinder bestaende lankarmens langd medfor en svangning av lankstycket och det darav uppburna, frighende bandhjulets axel kring den andra lankarmens ledpunkt och darmed en iikad strackning av drivbandet, vilken strackning kan drivas anda till svangning av hela parallellogramlanksystemet med atfoljande stegring av fordonet. The belt tensioning device according to the invention allows an extremely convenient and fast regulation of the belt tension and is mainly distinguished by the fact that the link system Or of the parallelogram type with the lath arms running between the belt drive wheel and the freewheeling belt wheel is coated substantially parallel and that one of these long arms Or is adjustable to its length and consists of a hydraulically actuatable pressure cylinder, the shaft of the releasing belt wheel being in line with or ph shorter distance Iran the link point of the pressure arm consisting of a pressure cylinder in the link piece On the link point of the other link arm, so that a caning of the pressure cylinder consisting of a pressure cylinder the length of the long arm entails a pivoting of the longitudinal piece of the long piece and the axle of the other leading arm of the other long arm and thus a smooth stretching of the drive belt, which stretching can be driven to pivot the entire parallelogram longitudinal system with consequent increase of the vehicle.

En utforingsform av uppfinningen, tillampad ph en traktor av halvbandstyp, beskrives nedan under hanvisning till bifogade ritningar, dar fig. 1 och. 2 visa schematiska sidovyer av olika tills-tend has bandstrackningsanordningen enligt uppfinningen, samt fig. 3 en framifran sedd detaljvy av namnda anordning. An embodiment of the invention, applied to a half-belt type tractor, is described below with reference to the accompanying drawings, in which: Figs. Fig. 2 shows schematic side views of different tendon strapping device according to the invention, and Fig. 3 shows a front view of a detailed view of said device.

I fig. 1 oeb. 2 antydes vid framvagnen av en halvbandstraktor som ph vardera sidan har ett framhjul 2, ett bakre, drivande bandhjul 3 samt ett framre, som boggihjul tjanstgorande bandhjul 4, Over vilka bandhjul ett band 5 lOper. 1/id en mad traktarns bakre del fast forbunden monteringsplatta 6 med vinkelprofil Oro en arm 7 °eh en skena 8 anbragta ph varsin sida am plattans 6 langsghende flans och bilda forankringspunkter for ett boggihjulet 4 uppbarande lanksystem. Delta bestar av en med 9 aliment betecknad tryckstang, som vid sin ena ande Or lagrad kring en tapp 10 vid armens 7 fria 'dude pa hogre hojd On drivhjulets 3 axel 11, ett boggirOr 12, som vid sin ena ande Or lagrad kring en tapp 13 vid skenan 8 ph ungefar samma avstand frail drivhjulets 3 axel 11 som tappen 10 och pa lagre hOjd On axeln 11, samt ett kort lankstycke 14 (se Oven fig. 3). Detta har ph sin ena sida dels en tapp 15, kring vilken den andra On-den av tryckstangen 9 är lagrad, och dels en tapp 16, Tiring vilken den andra anden av boggir8ret 12 Or lagrad. PA lankstyckets 14 motsatta sida utskjuter en tapp 17 (fig. 3) till bildande av en relativt tappen 16 exeentrisk lagringsaxel for boggihjulet 4. Vid den visade utforingsformen star hjulaxeltappen 17 mittemot tappen 15. In Fig. 1 oeb. 2 is indicated at the front trailer by a semi-belt tractor which on each side has a front wheel 2, a rear, driving belt wheel 3 and a front one, as bogie wheels serving belt wheels 4, over which belt wheels a belt 5 runs. 1 / id a rear part of the tractor fixedly connected mounting plate 6 with angular profile Oro an arm 7 ° eh a rail 8 placed ph each side of the longitudinal flange of the plate 6 and form anchoring points for a bogie wheel 4 supporting system. Delta consists of a push rod designated with 9 aliment, which at its one end Or is mounted around a pin 10 at the free height of the arm 7 on the axis 11 of the drive wheel 3, a boggerOr 12, which at its one end Or is mounted around a pin 13 at the rail 8 ph approximately the same distance from the shaft 11 of the drive wheel 3 as the pin 10 and at a lower height On the shaft 11, as well as a short length 14 (see Fig. 3 above). This has on its one side partly a pin 15, around which the other end of the push rod 9 is mounted, and partly a pin 16, Tiring which the other end of the bogie 12 is mounted. The opposite side of the PA piece 14 projects a pin 17 (Fig. 3) to form a relatively eccentric bearing shaft for the bogie wheel 4 relative to the pin 16. In the embodiment shown, the wheel shaft pin 17 stands opposite the pin 15.

Tryckstangen 9 Or variabel till sin langd, i det att den bestar av en hydraulcylinder 18, Iran vars ena ande en forlangning 19 utskjuter till bildande av namnda forsta ande av tryckstingen 9, och frau vars andra elide kolvstangen 20 utskjuter till bildande av namnda andra ande av tryckstangen 9. Hyd- 2— — raulcylindern ãr av enkelverkande typ och far sin matning via en hydraulledning 21. For begransning av den genom hydraulmanovreringen astadkomna svangningen av lankstycket 14 ãr boggistangens 12 motsvarande ande forsedd med en sakerhetsartordning i form av ett kloliknande anslag 22 for sparrning av kolvstangens 20 ande (jamfor fig. 3). Forbindelse mellan hydraulledningen 21 och motsvarande hydraulledning till den andra traktorsidans lanksystem är lampligen anordnad for senare beskrivet andamal. Slutligen Ur varje boggiror 12 utfort i tva delar, forenade medelst en bultforbindning 23 fiir majliggorande av vinkelinstallning av boggihjulen. The push rod 9 is variable in its length, in that it consists of a hydraulic cylinder 18, Iran, one end of which projects a extension 19 to form said first spirit of the push rod 9, and a woman whose second solid piston rod 20 projects to form said second spirit. of the pressure rod 9. The hydraulic cylinder is of the single-acting type and is fed via a hydraulic line 21. To limit the oscillation of the longitudinal piece 14 produced by the hydraulic actuation, the corresponding spirit of the bogie rod 12 is provided with a safety arrangement in the form of a claw-like stop 22. for sparring the end of the piston rod 20 (cf. Fig. 3). The connection between the hydraulic line 21 and the corresponding hydraulic line to the link system of the other tractor side is suitably arranged for the purpose described later. Finally, each bogie gear 12 is made in two parts, joined together by means of a bolt connection 23 for angular installation of the bogie wheels.

Den beskrivna anordningen verkar pa fig-j ande sat: Om man bortser fran det uppbarande framhjulet 2, tenderar uppenbarligen lanksystemet 9, 12, 14 att pfl grand av traktorns framtunghet intaga det i fig. 1 visade heldragna la-get. Framhjulet verkar emellertid till att uppehalla traktorns horisontella lage, och genom att utmata hydraulstangen 20 ur dess cylinder 18, svanges det boggihjulet 4 uppbarande lankstycket 14 kring sin tapp 16 till spannande av bandet 5 i onskad grad. Lanksystem och boggihjul intaga da det med prickstreckade linjer visade laget i fig. 1. The described device operates in the following way: If one disregards the supporting front wheel 2, the steering system 9, 12, 14 obviously tends to occupy the solid layer shown in Fig. 1 due to the front weight of the tractor. However, the front wheel acts to maintain the horizontal position of the tractor, and by discharging the hydraulic rod 20 from its cylinder 18, the longitudinal piece 14 carrying the bogie wheel 4 is pivoted about its pin 16 to tension the belt 5 to the desired degree. Edge systems and bogie wheels take over when the team shown in dotted lines in Fig. 1.

Bandspanningen Mlles dock ej sa hog, att avstandet mellan hjulaxlarna 17 (15) och 13 fixeras, utan en boggirorelse blir mojlig genom tryckstangens 9 och boggirorets 12 pendling kring sina lagringstappar 10 resp. 13. However, the belt tension Mlles is not so high that the distance between the wheel axles 17 (15) and 13 is fixed, but a bogie movement becomes possible through the oscillation of the push rod 9 and the bogie girder 12 around their bearing pins 10 and 10, respectively. 13.

Genom den tidigare namnda forbindningen mean hydraulledningen 21 och. motsvarande ledning pa de andra traktorsidan kan boggihjulparet snedstallas i hoj died under anpassning till terrangen. Om namligen en lokal forhojning i marken npptrader under det ena boggihjulet, kan detta hOjas under press-fling av kolvstangen 20 bakat i eylindern 18, sfl att tryckvatska pressas in i hydraulcylindern pa traktorns andra sida och darigenom astadkommer en sankning av denna sidas boggihj ul. Through the previously mentioned connection mean the hydraulic line 21 and. corresponding line on the other tractor side, the bogie wheel pair can be tilted to a higher height while adapting to the terrain. Namely, if a local elevation in the ground occurs under one bogie wheel, this can be raised during press-flapping of the piston rod 20 baked in the cylinder 18, so that pressurized liquid is pressed into the hydraulic cylinder on the other side of the tractor and thereby causes a lowering of this side bogie wheel.

Med tilltagande utmatning av kolvstangen 20 spannes bandet 5 alltmer och boggiriirelsen hammas i motsvarande grad, tills bandet Or maximalt spant. Da Or avstandet mellan. axlarna 15 och 11 helt fixerat, vilket medfor en lasning av boggirorelsen, eftersom punkterna 15, 10 och 11 bilda hornpunkterna i en. ledad triangel med stela sidor. With increasing discharge of the piston rod 20, the belt 5 is tightened more and more and the bogie movement is hammered to a corresponding degree, until the belt Or is maximally tensioned. Da Or the distance between. the shafts 15 and 11 are completely fixed, which entails a loading of the bogie movement, since the points 15, 10 and 11 form the horn points in one. articulated triangle with rigid sides.

Om kolvstangen 20 ytterligare utmatas, forlanges sidan 15-10 i den ledade triangeln 15--10-11, -varigenom vinkel mellan triangelsidorna 15-10 och 10-11 tvingas minska, vilket Or detsamma som en minskning av yinkeln mellan tryckstangen 9 och den med monteringsplattan 6 fast forenade armen 7. Enar punktens 15 hOjd fir fixerad genom boggihjulets 4 anliggning mot marken, bringas monteringsplattan 0 och darmed hela traktorn upp svangas till det i fig. 2 visade laget. En kedja eller liknande kan vara infast mellan traktorn och boggiroret for begransning av nppsvangningen. If the piston rod 20 is further discharged, the side 15-10 of the articulated triangle 15--10-11 is required, whereby the angle between the triangle sides 15-10 and 10-11 is forced to decrease, which Or the same as a reduction of the angle between the pressure rod 9 and the with the mounting plate 6 fixedly joined to the arm 7. If the height of the point 15 is fixed by the abutment of the bogie wheel 4 against the ground, the mounting plate 0 is brought and thus the whole tractor is swung up to the layer shown in Fig. 2. A chain or the like may be attached between the tractor and the bogie for limiting the swingarm.

Genom denna uppsvangningsmojlighet vinnes den stora fordelen att man. under pagaende korning genom en enkel manaver momentant kan hoja traktorns framvagn i onskad grad f Or forcering av hinder i framhjulens vag. Through this possibility of recovery, the great advantage of being gained. during pagan driving through a simple maneuver momentarily, the tractor's front trailer can be raised to the desired degree f Or forcing obstacles in the front wheel wagon.

Uppfinningen Or ej begransad till den beskrivna utforingsformen utan olika modifikationer Oro mOjliga inom uppfinningens ram, speciellt lanksystemets utformning, dar i princip tryckstang 9 med hydraul och boggiror 12 skulle kunna byta plats. Dimensionerna pO lankarna 9, 12 och 14 samt dessas lagringar Oro ej heller kritiska, blott lagringspunkten 10 ligger p0 hogre och lagringspunkten 13 pa lagre hojd On drivhjulets 3 axel 11. Boggihjulets axeltapp 17 (fig. 3) behover ej ligga i linje med dragstangens 9 lagertapp 15 utan kan ha annan relativt boggirorets 12 lagertapp 16 excentrisk placering. Arrangemanget enligt uppfinningen kan givetvis tillampas Oven ph andra bandfordon On traktorer. The invention is not limited to the described embodiment without various modifications. Possible possibilities within the scope of the invention, especially the design of the link system, where in principle push rod 9 with hydraulics and bogies 12 could change places. The dimensions of the links 9, 12 and 14 and their bearings are also not critical, only the bearing point 10 is higher and the bearing point 13 at lower height On the axis 11 of the drive wheel 3, the axle pin 17 (Fig. 3) of the bogie wheel need not be in line with the drawbar 9 bearing pin 15 but may have another eccentric location relative to the bearing pin 16 of the bogie gear 12. The arrangement according to the invention can of course be applied to other tracked vehicles On tractors.

Claims

Patent claim:

Device for selectively regulating the belt tension of semi-belt tractors and similar vehicles with belt bogie, in which the bogie's releasing belt wheel by means of a link sister Or is vertically pivotally connected to the vehicle frame or the like, which link system comprises two link arms, each of its resp. extending below the axis of the driving belt wheel in a fixed in the frame extend to a lankstyeke which carried the releasing belt wheel, characterized by the fact that the lance system Or of parallelogram type with the hada between the belt drive wheel (3) and the releasing belt wheel (4) , 18-20) are arranged substantially parallel and that one (18-20) of these longitudinal arms Or is adjustable in length and consists of a hydraulically actuatable pressure cylinder, the shaft (17) of the releasing belt wheel (4) being in line with or at a shorter distance the joint point (15) of the long arm (18) of a pressure cylinder (14) in the longitudinal piece (14) than the joint point (16) of the other long arm (12), so that an increase of the end of a pressure cylinder the length of the long arm (18-20) causes a pivoting of the long piece (14) and the shaft (17) supported therefrom (17) around the pivot point (16) of the other long arm (12) and with it an increased tension of the drive belt, which tension can be operated spirit to oscillation of the entire parallelogram link system with incidental elevation of the vehicle.

Device according to claim 1, characterized in that in order to limit the oscillation of the lane piece (14) by means of the lacquer arm (18-20), a stop (22) is arranged at the Auden of the other lane arm (12) connected to the lane piece (12). ).

Device according to claim 1 or 2, characterized in that the line (21) to the pressure cylinder of the long arm (18-20) located on one side of the tractor is connected to the line to the pressure cylinder in the long arm (18-20) located on the other side of the tractor. on such a salt, that a displacement of the piston in the pressure cylinder in the pressure cylinder to one side (18-20) due to the ground conditions causes a shift in the opposite direction of the piston in the pressure cylinder to the long arm (18-20) of the other side. Request Publications: Patent Papers from the United Kingdom 773 972.