Search academic texts

Information × Registration Number 0219U100722, 0118U100301 , R & D reports Title Development of recommendations on the type and technical-operational parameters of machines for wood primary transport taking into account the influence on the forest environment in the conditions of the SE "Brody Forestry". popup.stage_title Head Sturanivskyy Oleh А., Кандидат технічних наук Registration Date 01-03-2019 Organization Ukrainian national forestry university popup.description2  The results of the study of the impact of various types of machines on the forest environment in the conditions of the SE «Brody Forestry», in particular for forwarders MTZ-892 + RDM-12 4WD and AMKODOR 2662-01, are given. The paper considers the criteria for assessing the efficiency logging technologies. The criteria are divided into two groups: technical-operational and forestry-ecological, which reflect all the features of the "technology-machine-environment" system. Improving the efficiency of using forwarders by increasing productivity and minimizing the cost of resources is closely linked to the negative impact of the machine on the forest environment. The model, which is represented in paper, allows calculating the depth of the rut that is formed under the action of the wheel mover taking the soil properties, the parameters of the mover, the machine's carrying capacity and the number of passes into account. The results show that the forwarder causes the most damage to the soil surface during the first 5-7 runs. With the same number of passes on the sandy soils, the forwarder MTZ-892 + RDM-12 4WD creates a greater (up to 51%) depth of the track compared to AMKODOR 2662-01. The use of bogy tracks significantly reduces the depth of the rut: for AMKODOR 2662-01 up to 26%, and for MTZ-892 + RDM-12 4WD up to 56%. As a result of the timekeeping observations, specific time expenditures on the major technological operations implementation in the process of timber primary transportation have been determined. Moreover, the operational efficiency of the AMKODOR 2662-01 forwarder, which varies within the range of 5.1-6.4 m3 per hour from the transport distance of 500-1000 m., has been defined. Timekeeping observations have also shown the dependence of operation productivity on the length of service of the operator. According to the results of the study, practical recommendations for choosing the type and technical and operational parameters of the machines for the timbe Product Description popup.authors Sturanivskyy Oleh А. popup.nrat_date 2020-04-02 Close