Vol. 3 No. 10 (2021)

The use of hydraulic excavators in open pits has a high force effect on the teeth of the bucket, reduces the operating cycle compared to mechanical excavators by 15-18%, which in turn increases operational efficiency by 30-35%.

The hydraulic system is the mechanism that performs the excavation period of the hydraulic excavator, the period of bucket rise, the period of torsion of the loaded bucket, the period of loading, the period of torsion of the unloaded bucket, the period of unloading the bucket. Its optimal performance depends on the design of the hydraulic equipment, the technical condition of the hydraulic excavator and the working environment.

The article studies the features of higher educational institutions as an object of economic diagnostics. The place of economic diagnostics in ensuring the effective operation of higher educational institutions and the importance of the principles of diagnostics in management are highlighted. The approaches to assessing the quality of higher education from the point of view of expected results in accordance with the interests of the participants in the educational process are substantiated. There are scientific conclusions and practical recommendations on the economic assessment of the quality of higher education.

The article studies the design and principles of operation of wet dust collectors widely used in industry, analyzes their advantages and disadvantages, and also develops a new design of cone-mesh wet dust collectors. As a result of the theoretical studies carried out, equations were derived that calculate the total pressure lost during the transfer of dusty air into the device and the dispersion of liquid from the nozzle. Depending on the total pressure supplied to the device by dusty gases and liquids, it is possible to determine the efficiency of cleaning dusty air.

The report presents the design of a locking stemming, which allows increasing the efficiency of driving underground mine workings and increasing the rate of use of a borehole, and also gives the results of pilot tests and industrial implementation of the developed design of a locking stemming of explosive charges when driving underground mine workings.

The article discuss methods of the calculating speed of drilling with cone bits and compare with the real drilling speed on the mine. The methods of determining the drilling speed of different researchers are considered. The method of calculating the speed with the most approximate indicators from the practical drilling indicators is studied. A table of comparisons of drilling speed indicators determined by formulas and by reference is compiled.

The paper is devoted to the method proposed for the production of inlay fleecy knitwear on the basis of the plane stitch, where the fleecy thread placed along the stitch row and fastened to the ground due to forming from loops at least through three loop stitches.

The article presents the technique by exhibiting how it has effectively been utilized inside the arising innovation research area, and how it has urged scientists to make science anecdotal stories that depend on broad measure of examination, relating for the most part to their specific main subject area. The article momentarily ponders the way of how future examinations, foreknowledge and hierarchical exploration has effectively taken up and utilized this technique.