SE199790C1

SE199790C1 -

Info

Publication number: SE199790C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: P 0 Christensen och K Pedersen Prioritet begard friin den 29 november 1956 (Norge) Foreliggande uppfinning avser en. monterings- och spannanordning for traktordrivband av det slag, dar bandet är anbragt kring traktordrivhjulet och ett framfor gaende mellanhjul, vars axel iir fast vid anden av en med traktorn I vertikal led svangbart fOrbunden, svangarm under formedling av en i svangarmen vridbart lagrad Lank, vilken saval som svangarmen iir fjaderbelastad. Inventors: P 0 Christensen and K Pedersen Priority requested on 29 November 1956 (Norway) The present invention relates to a. mounting and clamping device for tractor drive belts of the type in which the belt is arranged around the tractor drive wheel and a forward intermediate wheel, the shaft of which is fixed to the end of a pivotally connected joint with the tractor in the vertical direction, as well as the arm of the arm is spring loaded.

Andamalet med fOreliggande uppfinning är att skapa en monterings- och spahnanordning av det .omtalade slaget, vilken ãr Litt anpassbar till olika traktortyper och genom vilken, under uppratthallandet .av ett konstant bandspanningstryck, svangarmens nedpressning forutorn ett konstant nedpressningstryck kan utsattas f5r ett extra, reglerbart fjadertryck, sh. att trycket mot marken vid behov kan Ras. The object of the present invention is to create a mounting and clamping device of the type mentioned, which is slightly adaptable to different types of tractor and through which, during the maintenance of a constant belt tension pressure, the pressure of the hinge arm can be subjected to a constant, adjustable pressure. spring pressure, sh. that the pressure against the ground if necessary can Ras.

Uppfinningen utmarkes i huvudsak darav, att den mellanhjulets lagringsaxel uppbarande lanken ar anordnad nedatriktad och i nor-manage svangd framat atminstone nagot for-hi dodpunktslaget samt att lankens fjfiderbelastning astadkommes av en mellan lankens nedatriktade ande och ett vid svangarmen fast, avenledes nedatriktat anslag inspand och for drivbandets spannande avsedd fjader, varvid den svangarmen paverkande fjadern (15 resp. 15') är sa anordnad, att den framkallar ett pa mellanhjulet verkande nedpressningstryck, varigenom denna svangarmen (5) paverkande fjader i kombination med dels namnda stallning av lanken, dels inverkan av fj adorn och dels trycket fran marken aven astadkommer en framatriktad kraftkomponent sã att, nar mellanhjulet pa grund av ett pt markytan befintligt hinder, t. ex. en upphojning utsattes for en uppatriktad kraft, mellanhjulets lagringslank tvingas att svanga i en bandspanning gynnande riktning och dfirigenom -kompensera den vid svangarmens samtidiga uppatrOrelse avtagande spanning-en i den enbart for bandspanningen avsedda fj adern. The invention is characterized in particular by the fact that the bearing bearing of the intermediate wheel bearing shaft is arranged downwardly and in a northwardly curved forward direction at least slightly in front of the dead center stroke and that the spring spring load is provided by an underneath for the tensioning spring intended for the drive belt, the spring-actuating spring (15 or 15 ') being arranged so as to produce a depressing pressure acting on the intermediate wheel, whereby this spring-actuating spring in combination in combination with the said position of the tongue and the effect of the spring and partly the pressure from the ground also provides a forward-looking force component so that, when the intermediate wheel due to an obstacle existing on the ground surface, e.g. an elevation is subjected to an upward force, the bearing hose of the intermediate wheel is forced to pivot in a direction favorable in a belt tension and thereby compensate for the tension decreasing in the simultaneous upward movement of the pivot arm in the spring intended only for the belt tension.

Uppfinningen kommer att forklaras mar-mare nedan med hanvisning till de bifogade ritningarna. The invention will be explained in more detail below with reference to the accompanying drawings.

Fig. 1 dr en sidovy av en. spannanordning enligt foreliggande uppfinning och fig. 2 ãr en liknande sidovy av en annan utforingsform. Fig. 1 shows a side view of a. clamping device according to the present invention and Fig. 2 is a similar side view of another embodiment.

Pa ritningarna betecknar 1 traktorns bakaxel eller axelkapa och 2 bakhjulet. In the drawings, 1 denotes the tractor's rear axle or axle cutter and 2 the rear wheel.

Pa bakaxelkapan eller traktorramen är fast en hallare 3 med en horisontell tapp 4, pa vilken är lagrad en framatskjutande, i vertikalplanet svangbar arm 5. Med armens 5 fria ande dr svangbart forbunden en led 6, som vid sin fria Ande är forsedd med en axel 7, pa vilken ett mellanhjul 8 ar lagrat. Kring mellanhjulet 8 och bakhjulet 2 är drivbandet 9 anbragt pa vanligt Ott. Attached to the rear axle cover or tractor frame is a holder 3 with a horizontal pin 4, on which is mounted a projecting arm 5 pivotable in the vertical plane. With the free spirit of the arm 5 there is pivotally connected a joint 6, which at its free spirit is provided with a shaft 7, on which an intermediate wheel 8 is mounted. Around the intermediate wheel 8 and the rear wheel 2, the drive belt 9 is arranged on a normal Ott.

Mellan ledens 6 fria 5.nde oeh ett pa svangarmen 5 fast anbragt anslag 10 dr inspand en tryckfjader 11, som stravar att svanga ledan 6 framat och darigenom spanna drivbandet 9. Fjadern 11 fir pa kant satt anordnad reglerbar, sa att bandspanningen ar installbar efter onskan. Between the free 5th end of the joint 6 and a stop 10 fixedly mounted on the swing arm 5, a compression spring 11 is clamped, which tends to swing the joint 6 forward and thereby tension the drive belt 9. The spring 11 is arranged adjustably on the edge, so that the belt tension can be installed after onskan.

Svangarmen 5 är forsedd med en bakom tappen 4 utskjutande forlangning 1, sa att armen bildar en dubbelarmad havstang. Vid forlangningen 5' ar fast den ena anden av en bull 12, som skjuter upp genom ett i forhallande till traktorramen fast anslag 13. Mellan detta och en pa bulten anbragt stOdbricka 14 är inspand en tryckfjader 15, som stravar all svanga fOrlangningen 5' uppat och darmed att s-vanga styrningshjulet 8 nedat mot mar-ken Stodbrickan 14 fix pa kant satt forskjutbar pa Mitten i och for reglering av fjader- 2— ‘— trycket. Genom den beskrivna anordningen komma saval bandspanningstrycket som trycket mot marken att hdlla sig praktiskt taget kanstanta i Overensstammelse med de installda fjaderspanningarna. The swing arm 5 is provided with an extension 1 projecting behind the pin 4, so that the arm forms a double-armed sea rod. Attached to the extension 5 'is one end of a ball 12, which projects through a stop 13 fixed in relation to the tractor frame. Between this and a support washer 14 mounted on the bolt, a compression spring 15 is clamped, which struts all the curved extension 5' upwards. and thus that the steering wheel 8 down towards the ground Stodbrickan 14 fixed on the edge was displaceable in the middle in order to regulate the spring pressure. Through the described device, both the belt tension pressure and the pressure against the ground will remain practically constant in accordance with the installed spring stresses.

I och for att tillata en tillfallig Ruing a.v drivbandets tryck mot marken fir vid Auden -av svangarmens forlangning 5' fast den ena anden av en fjaderanordning, vars andra an-de -ar fast -i en angransande arm: 17, vilken utgor en av traktorn hydrauliskt driven hay-arm, .sa att fjadern 16 till'ates ansatta en extra, uppatriktad fjaderkraft mot forlangningen 5' och id.arigenom aka styrningshjulets 8 och drivbandets 9 tryck mot marken. In order to allow a temporary ruining of the pressure of the drive belt against the ground, one of the springs of a spring device is fixed at Auden - by the extension 5 ', the other end of which is fixed in an adjacent arm: the tractor hydraulically driven hay arm, so that the spring 16 is allowed to apply an extra, upwardly directed spring force against the extension 5 'and thereby aka the pressure of the steering wheel 8 and the drive belt 9 against the ground.

Utforingsformen enligt fig. 2 motsvarar i huvudsak den i fig. 1 visade men fir avsedd f6r en traktortyp, dar mekanismen i hnvudsak maste placeras framfor bakaxeln och tillrackligt Mgt for att sakerstalla fri passage Over fran marken eventuellt uppskjutande hinder. The embodiment according to Fig. 2 substantially corresponds to that shown in Fig. 1, but intended for a type of tractor, where the mechanism must essentially be placed in front of the rear axle and sufficiently large to ensure free passage over the ground, possibly any suspending suspension.

I denna utforingsform betecknar 2 likaledes bakhjulet och 3 den pa traktorramen fasta hallaren med tappen 4 for svangarmen 5 med leden 6, pa vilken axeln 7 for styrningshjulet 8 fir lagrat. Likasa astadkommes drivbandets 9 epannande medelst en reglerbar tryckfjader 11, som fir inspand mellan leden 6 och det fasta anslaget 10 pa svangarmen 5. In this embodiment, 2 likewise means the rear wheel and 3 the holder fixed to the tractor frame with the pin 4 for the swing arm 5 with the joint 6, on which the shaft 7 for the steering wheel 8 is mounted. Likewise, the opening of the drive belt 9 is effected by means of an adjustable compression spring 11, which provides clamping between the joint 6 and the fixed stop 10 on the swing arm 5.

Fjaderanordningen f6r astadkommande av det konstanta trycket mot marken fir i detta fall anbragt ovanfor svangarmen, i det att den reglerbara fjadern 15' är anbragt mellan en uppskjutande -arm 3' pa hallaren 3 och svangarmens 5 framre ande, sfisom visas pa ritningen. The spring device for applying the constant pressure against the ground is in this case arranged above the swing arm, in that the adjustable spring 15 'is arranged between a projecting arm 3' on the holder 3 and the front end of the swing arm 5, as shown in the drawing.

Fjaderanordningen 16' for tillforsel av ett extra tryck inot marken är 1 denna utforingsform med sin ena ande fast i svangarmen 5, lampligen i den nedre a.nden av fjaderanslaget 10 pa denna, och med sin andra ande fast en wire eller kedja 18, som Riper kring en 1 forhfillande till traktorramen fast anordnad brytrulle 19 och a" fast vid den bakat riktade, fria an.den av en havarm 20, vars andra ande -fir svangbart lagrad pa en i forhallande till traktorrathen fast anordnad tapp 21. HavarMens 20 fria ande ãr vidare medelst en stagstrackare 22 eller nagon annan reglerbar for-Enduing forbunden med den angransande armen 17 i traktorns hydrauliska lyftmekanism. The spring device 16 'for supplying an extra pressure into the ground is in this embodiment with one end fixed in the swing arm 5, apparently in the lower end of the spring stop 10 thereon, and with its other end fixed a wire or chain 18, which Scratches around a break roller 19 fixedly attached to the tractor frame and attached to the rearwardly directed, free end of a sea arm 20, the other end of which is pivotally mounted on a pin 21 arranged in relation to the tractor wheel. is further connected by means of a tie rod tensioner 22 or some other adjustable for-Enduing to the adjacent arm 17 in the hydraulic lifting mechanism of the tractor.

Vid denna anordning komma drivbandets Spanntryck och trycket mot marken, liksom vid anordningen .enligt fig. 1, att notmalt konstanta, medan trycket mot marken tillfalligt kan Okas genom en dragning rforbind-ningen 22, varvid havarnaen 20 svangs uppat och spanner fjaderanordningen 16', sa att en 15kad, medal riktad fjaderbelastning an:sattes mot svangarmen 5, sasom latt inses.-7 Genoin foreliggande uppfinning hat alltsa skapats en monterings- .eller spfinnanord- ning, med hjalp av vilken drivbandet utsfittes for skilda, konstanta spanntryck oeh tryck mot marken med onskad styrka och samtidigt kan utsattas for ett tillfalligt Okat tryck mot marken med hj alp av traktorns hydrauliska lyftanordning. In this device the tensioning pressure of the drive belt and the pressure against the ground, as in the device according to Fig. 1, become notmalt constant, while the pressure against the ground can be occasionally increased by a tensioning connection 22, the ports 20 being swung upwards and tensioning the spring device 16 '. so that a 15kad, medal-directed spring load was applied to the pivot arm 5, as can be readily understood. 7 The present invention has thus created a mounting or spinning device, by means of which the drive belt is fitted for different, constant clamping pressures and pressures against the ground with the desired strength and at the same time can be exposed to a temporary Increased pressure on the ground with the help of the tractor's hydraulic lifting device.

Pa ritningen visas endast anordningen pa traktorns ena sida men pa en liknande anordning fir naturligtvis: anbragt aven pa den andra sidan. The drawing shows only the device on one side of the tractor but on a similar device for of course: also mounted on the other side.

Claims

Patent claim:

Mounting and spreading device for tractor drive belts of the type in which the belt is arranged around the tractor drive wheel and a forward intermediate wheel, the shaft of which is fixed to the other by a pivot arm connected to the tractor in the vertical direction during transmission of a pivot arm. rotatably mounted longitudinally, which is provided with the spring arm being spring-loaded, characterized in that the longitudinal bearing (6) supporting the intermediate wheel - (8) bearing shaft (7) is arranged downwardly and normally pivoted forward at least slightly past the clod point stroke and that the spring (6) spring load of an inwardly directed spirit between the tongue (6) and an abutment 2 which is fixedly attached to the swing arm (5) and is thus intended to tension the spring (11) of the drive belt (9), the spring (15 resp. 15 ') is arranged so that it produces a depressing pressure acting on the intermediate wheel, whereby this swinging arm (5) acting on a spring in combination with the said position of the tongue (6), partly the effect of the spring 3. and partly the pressure from the ground provides a forward-looking force component, sO. to reach the intermediate bridge (8) due to an obstacle present on the ground surface, e.g. an uprising was applied to an upward force, the bearing slat (6) of the intermediate bit is forced to swing in a direction favorable to the belt tension and thereby compensate for the decreasing tension in the simultaneous upward movement of the slant arm (5) in the spring intended only for the belt tension. .

Device according to patent claim 1, characterized in that the swing arm (6) is provided with an additional spring device (16 and 16 ', respectively), which is under the influence of a hydraulic lifting mechanism on. tractor pa. so that it can, if necessary, be made to increase the tension and depressurization of the belt.

Device according to patent claims 1 and. 2, characterized in that the pivot arm (5) is provided with a longitudinal flap (5 ') projecting at the opposite side of its pivot pin (4), which is actuated by the load spring (15), which pivot extends the elongation (5') with a adjustable force, the extension (5 ') also being intended for fastening one of the spring devices (16) connected to the tractor's hydraulic lifting mechanism (17). Device according to claim 1 and 2, characterized in that the load spring (5 ') of the pivot arm (5) is arranged on the upper side of the arm between the free dude of the arm and a suspension arm (3) for the bearing pin (4) of the pivoting arm (5). 3 '), and that the spring device (16'), which is connected to the tractor's hydraulic lifting mechanism (17), is connected to the suture arm, suitably at the downwardly directed spring stop (10) mounted on the swing arm.

Device according to claim 4, characterized in that the free spirit of the spring device (16 ') is prevented by means of a flexible, joke extensible member (18) by the rearwardly directed free end of an arm (20) which, with its second dude, is rotatably mounted on the tractor, and that the free dude of the arm (20) is connected to the tractor's hydraulic lifting mechanism (17) by means of an adjustable connection (22).

Device according to claim 5, characterized in that the flexible, jock-stretchable member (18) pulls the projection around a breaker roller (19), which is mounted at some distance below the storage point (21) of the arm (20) in the tractor. Cited publications: Patents Iran USA 2,654,639, 2,709,117, 2,719,062.