Essays about: "Harvester heads"

Showing result 1 - 5 of 9 essays containing the words Harvester heads.

  1. 1. The design of a hydraulic equalizer bar for the feeding mechanism on forest harvester heads

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Arvid Söderlund; [2023]
    Keywords : Harvester; Harvester head; Komatsu Forest; Hydraulics; Equalizer bar; Parallellstag; Stag; Skogsmaskin; Skördare; Aggregat; Skog;

    Abstract : Due to the importance of a correct tree placement and the wear that occurs to equalizer bars inharvester heads, Komatsu Forest AB in Umeå was interested if the bar could be replaced with ahydraulic system. According to Komatsu, the problems were that the equalizer bars that are responsible forsynchronizing the delimbing knives and feeding mechanism add weight, take up space and have atendency to break before their life expectancy. READ MORE

  3. 2. The process behind the delimbing of trees

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Martin Sunnälv Persson; [2021]
    Keywords : Thinning; MATLAB; branch distribution; debranching; Gallring; MATLAB; grendistribution; avgrening;

    Abstract : In modern forestry, two types of machines are generally used for thinning, harvesters and forwarders. These machines are large and weigh several tens of tons, this means that they damage the ground when they drive around in the woods. READ MORE

  4. 3. Investigation of Wear in Spline Coupling for Saw Unit JPS R5500

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Author : Per Blomqvist; Patrus Athir; [2019]
    Keywords : Wear in Spline; Saw Unit; Harvester heads; Spline coupling; Failure of spline coupling; Root cause analysis;

    Abstract : JPS Teknik AB in Färila, located in the middle of Sweden, is a company in manufacturingsaw units to harvester heads. This thesis is about the company's best selling saw unit, JPSR5500. The saw unit is powered by a hydraulic motor, the torque is transmitted from themotor into the saw unit thought a spline coupling. READ MORE

  5. 4. Analys av faktorer som påverkar noggrannheten vid skördaraggregatets diametermätning

    University essay from SLU/Department of Forest Biomaterials and Technology (from 131204)

    Author : Elisabet Eriksson; [2018]
    Keywords : skördarkalibrering; nyckeltal; kontrollfiler; träffprocent; trepunktsmätning;

    Abstract : Skogsindustrin har en betydande roll för Sverige då den står för 9-12 % av förädlingsvärdet och bidrar till en ekonomi baserad på förnyelsebara råvaror. För att nyttja råvaran på bästa sätt som byggmaterial ställs det krav på att skördaren apterar stammarna till rätt dimensioner. READ MORE

  6. 5. Engreppsskördarens tekniska utveckling

    University essay from SLU/Department of Forest Biomaterials and Technology (from 131204)

    Author : Daniel Persson; [2016]
    Keywords : skördare; aggregat; avverkning; avverkningsmaskiner; skogstraktorer; skogshistoria; maskindata;

    Abstract : Historiskt finns det ett väldigt stort spann av olika skogsmaskiner. Redan efter andra världskriget började maskiner ersätta hästar och människor. År 1965 kom de första avverkningsmaskinerna och 1966 tillverkades den första avverkningsmaskinen i Sverige. Mekaniseringen innebar stor produktivitetsökning inom skogsbruket. READ MORE