Primjena komercijalnog sustava za praćenje rada strojeva u istraživanju izvoženja drva forvarderom

doctoral thesis

• Title (english): Application of commercial monitoring system for the purpose of study forwarder extracting features
• Author: Zdravko Pandur
• Mentor: Marijan Šušnjar (mentor)
• Committee member: Tomislav Poršinsky (predsjednik povjerenstva)
• Granter: University of Zagreb; Faculty of Forestry and Wood Technology; Zagreb
• Defense date and country: 2013, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Forestry
• Universal decimal classification (UDC): 629 - Transport vehicle engineering

Abstract

Fleet Management Sustav (FMS) korišten je u svrhu sakupljanja i daljinskog slanja izmjerenih podataka sa dva istraživana forvardera. Mjereni podaci bili su: potrošnja goriva, brzina vrtnje motora, detekcija rada hidraulične dizalice, GPS koordinate položaja forvardera i vrijeme. Na temelju dobivenih podataka te njihove obrade donešen je sud o primjenjivosti komercijalnog FMS-a, odnosno o njegovim dobrim stranama te o nedostacima istog.Usporedno sa mjerenjem značajki forvardera, mjeren je i utjecaj forvardera na promjene fizičko mehaničkih značajki tla. U tu svrhu mjerena je prodirna značajka tla na gaženom tlu u kolotrazima te na negaženom između i izvan kolotraga. Uz prodirnu značajku mjerena je i smična čvrstoća tla na površini i na dubini tla od 15 cm. Radi utvrđivanja promjene gustoće gaženog tla, kapaciteta tla za vodu i zrak te trenutne vlage tla uzimani su uzorci tla sa kopeckijevim cilindrima na površini i na dubini tla od 30 cm. Kao pokazatelj okolišne pogodnosti izvođenja radova bitan parametar je i dubina kolotraga koja je isto tako mjerena na istraživanim radilištima.Pomoću prijenosne mjerne platforme za vaganje mjereno je osovinsko opterećenje forvardera kod izvoženja drva na pomoćno stovarište. Na temelju poznatog osovinskog opterećenja izračunat je indeks kotača koji kao bezdimenzijski parametar ovisi o značajkama tla i vozila, a prema WES metodi određuje prihvatljivost izvođenja radova.Uz pomoć snimljenih koordinata kretanja forvardera izračunat je udio gažene površine tla za tri istraživana radilišta kod izvoženja prvo tehničke oblovine (tehničke oblovine i višemetarskog ogrjevnog drva) te kod naknadnog izvoženja energijskog drva, odnosno šumskog ostatka.Na temelju odvaga svakog tovara kod izvoženja drva u radu su iznešeni rezultati o masenoj iskoristivosti istraživanih forvardera kod izvoženja tehničke oblovine i energijskog drva iz naplodnog i dovršnog sijeka, a na temelju poznate duljine i obujma drvnih sortimenata u svakom turnusu, duljinsko i volumno iskorištenje tovarnog prostora.U radu je izračunat energijski povrat uloženog EROI za tri različita drvna proizvoda na razini UŠP Vinkovci.Na kraju istražene su značajke istraživanih forvardera Valmet 840.2 (6 kotačni) i Valmet 860.4 (8 kotačni) morfološkom raščlambom.

Abstract (english)

Fleet Management System (FMS) is used for the purpose of collecting and remote sending measured data from two investigated forwarders. Measured data were: fuel consumption, rpm, hydraulic crane work detection, GPS coordinates of forwarders and time. Based on the collected data and their processing it was brought judgment of the applicability of commercial FMS what means its good sides and the disadvantages of the same.Parallel with the measurement of forwarders features, it was measured the impact of a forwarder to change physical-mechanical characteristics of the soil. For this purpose it was measured soil bearing capacity of soil in ruts and on undisturbed soil between and outside of the ruts. It was measured also the shear strength of the soil on surface and the soil depth of 15 cm. In the purpose of determination of density changes disturbed soil, soil capacity for water and air and the current soil moisture samples were taken with cylinders on the surface and in the soil depth of 30 cm. As an indicator of the environmental benefits of the works is an essential parameter of the rut depth that is also measured in the studied sites.With portable weighing platform it was measured axial load of forwarders during extracting wood to the landing site. Based on the known axle load it was calculated wheel numeric as dimensionless parameter that depends on the characteristics of the ground and the vehicle, which according to WES method determines the acceptability of the work. Using recorded coordinates of forwarders movement it was calculated the percentage of trampled soil surface for the three investigated sites during the transportation in first of technical roundwood (technical roundwood and long firewood), and the subsequent transportation of biomass or forest residue.Based on sample weight of each load of timber extraction, the paper presents the results of load usability of investigated forwarders during exporting technical roundwood and biomass from seeding and final felling areas. Based on the known length and volume of wood assortments in every tour, the length and volume utilization of cargo space was also calculated.In the paper were presented calculated values of energy return on investment - EROI for three different wood products at the level of the Forest Organization Unit Vinkovci.At the end, it were examined the features of Forwarder Valmet 840.2 (6-wheeled) and Valmet 860.4 (8-wheeled) using morphological analysis.

• Keywords: fleet management sustav (FMS); forvarder; nizinske šume; okolišna pogodnost; EROI
• Keywords (english): fleet management system (FMS); forwarder, lowland forests; environmental suitability; EROI
• Language: croatian
• URN:NBN: urn:nbn:hr:108:554977
• Study programme: Title: Forestry - Techniques, Technologies and Management in Forestry - postgraduate doctoral study - university; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje biotehničkih znanosti, polje šumarstvo (doktor/doktorica znanosti, područje biotehničkih znanosti, polje šumarstvo)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-01-12 14:01:14