Issue №3, Vol. 22
Chetverikova I., Zimarin S., Druzhinin D., Bogdanov D., Khripchenko M. Optimization of the hydraulic drive mode of the new lifting mechanism of the truck loader manipulator // Resources and Technology. 2025. №3, Vol. 22. P. 162‒183.
DOI: 10.15393/j2.art.2025.8503
Optimization of the hydraulic drive mode of the new lifting mechanism of the truck loader manipulator
| Chetverikova Irina | Voronezh State University of Forestry and Technologiesnamed after G. F. Morozov, chivles@rambler.ru |
| Zimarin Sergey | Voronezh State University of Forestry and Technologiesnamed after G. F. Morozov, sezimarin@yandex.ru |
| Druzhinin Denis | Voronezh State University of Forestry and Technologiesnamed after G. F. Morozov, druchinin.denis@rambler.ru |
| Bogdanov Dmitry | Voronezh State University of Forestry and Technologiesnamed after G. F. Morozov, bogdanov_s69@mail.ru |
| Khripchenko Michael | Voronezh State University of Forestry and Technologiesnamed after G. F. Morozov, at-conf@yandex.ru |
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Key words: orest complex; logging; logging truck; hydraulic drive; manipulator; damper |
Summary: On timber handling machines of the manipulator type, there is a well-known problem of regulating the boom lifting speed depending on the gravity of the load and the problem of reducing the dynamic load of the boom group. Existing mechanical damping devices have the ability to operate only in certain positions of bearing pistons or hydraulic cylinders. Therefore, it is necessary to develop the design of the lifting mechanism of the manipulator to provide an accelerated lifting mode for light loads and idle movements of the manipulator and to reduce dynamic loads during normal loading and unloading operations. Theoretical and experimental studies are required to substantiate the parameters and operating modes of the hydraulic drive of the new lifting mechanism of the manipulator truck. This article presents an experimental study of the hydraulic drive operation of a new lifting mechanism of a manipulator aimed at determining its optimal parameters to ensure a reduction in dynamic load and an increase in productivity of a forest manipulator. Regression models of the technological parameter effect of the new damper (degree of throttle opening) of the hydraulic drive of the forest manipulator on its performance (time of lifting and lowering the boom of the manipulator, pressure in the hydraulic system when lifting and lowering the boom of the manipulator, the number of pressure fluctuations in the hydraulic system when lifting and lowering the boom of the manipulator) have been obtained. It was found that with an increase in the degree of opening of the throttle of the hydraulic drive of the forest manipulator, the boom lifting time first decreased to the throttle opening value of 0.74, and then increased; the boom lowering time decreased; the pressure in the hydraulic system increased when lifting and lowering the boom; the number of pressure fluctuations in the hydraulic system decreased to the throttle opening value of 0.82, and then it increased; the number of pressure fluctuations in the hydraulic system decreased during lowering. The optimal value of the degree of the damper throttle opening is 0.78 (78%), which ensures maximum performance of the hydraulic drive of the forest manipulator with minimal dynamic loading of the hydraulic system, which makes it possible to achieve the research goal. |
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