Improving the technological equipment of a forestry machine with a manipulator for uprooting using vibration

The work is devoted to the development of technological machines in the field of forestry. The lagging behind in the development of forestry has led to a decrease in reforestation and, as a result, to a decline in timber production. The problems of the Russian timber industry complex require the creation of high-tech machines for uprooting. As a promising direction to facilitate the uprooting process, vibration methods of influence are indicated. The main stages of development of this direction and the authors of the created machines are given. The implementation of the possibilities of using vibration is carried out in the concept of a rooting machine based on a caterpillar felling unit with a manipulator equipped with a gripping device with vibration equipment. When choosing the type of vibration, two options were considered – these are vertical longitudinal and torsional vibrations. The effectiveness of the concept of this machine is confirmed by analytical and experimental studies. The result was the obtaining of optimal intervals of disturbing frequencies. Since the machine is subjected to heavy loads, the gripper used in the LP-19 did not fit and it became necessary to create a special design of the gripper. To apply longitudinal and torsional vibrations to this machine, two design schemes were used. A comparative analysis of the effectiveness of the use of longitudinal and torsional vibrations during uprooting was carried out, the results are presented in the power table. Based on the results of the work, the following conclusions were drawn: the proposed design of the machine for uprooting with vibration fully realizes the advantages of the mathematical model, in which the vibration effect reaches its maximum efficiency; allows you to uproot trees and stumps; is universal, as it can carry out uprooting, storage and loading of products for transport, as well as cleaning the root system from the soil after extracting the butt using vibration.

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