Manual drilling machines of the type IP I0IIpolupolulyu great spread in the installation and repair work. Their main advantages are small overall dimensions, convenience of energy transportation, high safety, reliability and durability ...
The task of structural studies of chamber feeders is to determine the most appropriate forms of parts and units of chambers, as well as the rational design of the feeder as a whole.
When studying the input of material into the pulp conveyor chamber feeders used two possible design schemes: with gravity and hydrodynamic feeding of material. The most expedient design of chamber feeders are feeders with hydrodynamic feeding of material, as they more meet the conditions of operation of hydraulic conveying systems.
Widely used and as the main mechanical means of hydraulic lifting systems hydro-elevators to a large extent exhausted their possibilities. Further constructive and technological improvement slightly changes their significant disadvantages: low efficiency, high energy consumption and low lifting height.
To conduct experiments to study the process of flow of bulk material from the chambers of the hydraulic feeder in the laboratory of the Department of Mechanization of Mining Operations LGI was mounted experimental installation, which is a single-section chamber feeder ...
Hydrotransort systems with feeders are widely used both in the USSR and abroad. The most expedient are chamber feeders. Their construction cost, operation, simplicity of construction and reliability are basically satisfactory ...
For hydraulic transportation of bulk materials of various characteristics over significant distances is promising application of feeders in combination with high-pressure centrifugal pumps.
Hydromechanization of mining operations was first applied in the 30s of the last century during the development of gold-bearing placers in the Ural Mountains by open-pit operations. Later, since 1852, hydromechanization began to be applied in similar conditions in California (USA), where this method became especially widespread. Hydromechanization of underground works began much later. The first hydro-mine in the USSR was built in 1939 in the Donetsk basin. A few years before that, experimental work was carried out in coal mines in the Kizelov basin in the Urals and manganese mines in the Nikopol region. At present, hydromechanization is widely used in open-pit mining for various purposes and in the development of coal deposits by underground works.
В предлагаемой статье приводятся результаты исследований взаимодействия сил при работе скрепера в период зачерпывания материала и устанавливаются основные технические параметры канатных скреперов. В качестве исходной, характеризующей процесс копания грунтов (или процесс зачерпывания насыпных материалов) ковшами землеройных машин, принимаем известную формулу Н. Г Домбровского (см. статью).
