DESIGN OF CUTTING ELEMENTS OF REUSABLE MOTOR GRADERS IN MINING

Kozbagarov R.A. Shalbayev K.K. Zhiyenkozhayev M.S. Kamzanov N.S. Naimanova G.T.
2022 National Academy of Sciences of the Republic of Kazakhstan

News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2022 #2022 Issue 3 128 - 141 pp.

Motor graders are used in mining for construction, repair, maintenance of quarry roads, on dumps, during the development of placer places-births, construction of pipelines, etc. The polygonal shape of auto grader knife leads to the fact that ground is cut by three faces-the main one forming common blade of the dump, two side ones adjacent to main face, producing oblique cutting. It was established that wear of dump’s blade occurs unevenly along length-peripheral parts of blade wear more intensively than central ones. Moreover, in dumps of different length, blade sections located at same distances from the center wear similarly, i.e. doesn’t depend on the dumping total length. The following requirements for design of dumps cutting part have been developed on basis of established patterns of blades wear of motor grader dumps:-standard knives have maximum two blades. Therefore, single knife can be used to form an unencumbered dump blade only twice-by detaching it, turning and fixing it on the dump. It is then restored or rejected.-since the dump’s blade wears unevenly along the length, it is advisable to replace it with the unworn one not entirely, as is done, but along the sections. The square knives adopted as a basis for development allow to increase the number of blade shifts to four, which increases the knives’ life and productivity compared to standard knives.

Auto grader , Cutting , Cutting face , Dump , Knife

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Academy of Logistics and Transport, Almaty, Kazakhstan
Satbayev University, Almaty, Kazakhstan
Baishev University, Aktobe, Kazakhstan

Academy of Logistics and Transport
Satbayev University
Baishev University

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