Авторы:
Дата издания
26.01.2022На каком языке издана
ISSN
ISSN PRINT 2345-0533, ISSN ONLINE 2538-8479Область исследования
Тип исследования
Аннотация (краткое описание)
In recent years, research has been underway to create working bodies of excavation machines that allow digging soil at higher speeds. One of these new types of machines are excavation and transport machines with an inertial bottom discharge rotor. The paper presents the results of studies of high-speed digging and proposes a method for determining the average values of the energy intensity of soil transportation, and the proposed equations can be recommended for calculating the inertial rotor. The table of costs of specific energy consumption and productivity from the speed of rotation of the rotor at constant chip sizes is given. The analysis of studies showed that the energy intensity increases with an increase in the speed of rotation of the rotor, and the productivity grows according to a linear law. The inertial-type rotor during the test proved to be quite efficient, and the performance of the tested rotor is four times higher than that of the existing gravity-type rotor.DOI
10.21595/vp.2023.23086Тип публикаций
Практическое значение
By summarizing the results of experimental studies, the following conclusions can be drawn: 1) proposed procedure for determination of average energy consumption for the process of soil transportation by inertial rotor. 2) the operability of the inertial rotor, which effectively develops and unloads soil on the receiving conveyor, as well as the stable transportation of soil by the receiving conveyor at inclination angles up to 36 and belt speed m/s, is established 2-5 m/s; 3) the largest productivity of the rotor reached in the studied ranges of chip parameters and digging speeds 𝐷= 1,54 was 254 m3/h, which is 4 times higher than that of the gravitational rotor of the same diameter; 4) optimal in terms of energy intensity, chip parameters at a given knife height were: chip thickness 𝑎 = 180-200 mm, width 𝑏 = 30-40 mm, the ratio of chip thickness to width � �/𝑏 = 3-5, with a larger chip thickness, energy intensity increases due to the deterioration of the chip separation process and an increase in the height of the scallops removed by the second row of knives; 5) complete transportation of cut soil is observed with the number of pairs of knives 𝑧 = 10 and some crumbling at 𝑧 = 5 and 𝑧 = 8. In general, the high performance of the inertial rotor, its sufficient strength when encountered with obstacles, the low energy intensity of the digging process and good work on wet and sticky soils make it possible to conclude that on the basis of inertial rotors continuous earth-moving machines of various purposes of high productivity of relatively low weight and, iКоличество цитирований
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Файлы документа
13. Vibroengineering PROCEDIA, Volume 48, 2023.pdf