SU988954A1

SU988954A1 - Slinging apparatus of rotary snow plough

Info

Publication number: SU988954A1
Application number: SU813327612A
Authority: SU
Inventors: Александр Борисович Ермилов
Original assignee: Московский Ордена Трудового Красного Знамени Автомобильно-Дорожный Институт
Priority date: 1981-08-07
Filing date: 1981-08-07
Publication date: 1983-01-15

Description

1one

Изобретение относитс к машинам дл зимнего содержани дорог и аэродромов , пренмушественно типа снегоочистителей , и направлено на повышение эффективности работы данных машин.The invention relates to machines for winter maintenance of roads and airfields, primarily of the type of snow plows, and is aimed at improving the efficiency of these machines.

Известен метательный ашюрат снегоочистител , содержаший кожух, в котором закреплен на валу лопастной ротор и св занный с выбросной патрубок, на внутренней поверхности которого вьь- д попнены каналы, ориентированные вдоль оси выбросного патрубка и св занные с источником сжатой текучей среды . Попутный поддув сжатого воздуха через щелевые каналы при выбросе снега из 5 .метательного аппарата позвол ет существенно уменьшить скорость выбрасываемых фрагментов снега относительно воздушной среды, сохран неизменной или увеличива а&солютную скорость выброса, 20 и тем самым значительно снизить силу аэро инам11ческого сопротивлени на начальном участке баллистической траектор ш полета фрагментов и увеличитьA snow thrower is known to contain a casing in which a blade rotor is attached to the shaft and connected to an exhaust port, on the inner surface of which channels along the axis of the exhaust port and connected to a source of compressed fluid are swelled. Associated blowing of compressed air through slit channels when snow is ejected from the sweeping apparatus allows to significantly reduce the speed of ejected snow fragments relative to the air environment, maintaining or increasing the solar speed of emission, 20 and thereby significantly reducing the force of aero resistance on the initial section ballistic trajectory w flight of fragments and increase

дальность метани снега, поскольку сила аэродинамического сопротивлени находитс в квадратичной зависимости от величины относительной скороисти выброса снега Cl .snow throwing distance, since the aerodynamic drag force is in quadratic dependence on the relative speed of snow emission Cl.

Однако попутный поток сжатого вог«уха сам подвержен резкому торможению, действу как затопленна стру в неподвижной воздушной среде, поэтому разница между относительной и абсолютной скорост ми полета фрагментов снега быстро уменьшаетс , и увеличение дальности метани снега составл ет не более 2О% от максимальной цальности метани без попутного поддува сжатого воздуха .However, the associated stream of compressed ear itself is subject to sudden braking, acting as a submerged jet in still air, therefore the difference between the relative and absolute flight speeds of snow fragments quickly decreases, and the increase in the snow throwing distance is no more than 2% of the maximum methane value. without associated blowing of compressed air.

Цель изобретени - повышение эффективности отбрасывани снега путем укрупнени частиц снега при его движении вдоль выбросного патрубка.The purpose of the invention is to increase the efficiency of snow throwing by enlarging snow particles as it moves along the discharge port.

Claims

The above objective is achieved in that the indicated source of fluid is a generator of superheated water vapor. FIG. 1 shows schematically the throwing apparatus of FIG. 2 shows section A-A in FIG. J .. A throwing apparatus mounted predominantly on the snowplow of bodies contains a blade rotor 1 mounted rotatably in a fixed casing.

2. On the fixed goat 2, the exhaust patra of side 3 with channels 4 is rigidly fixed to supply compressed fluid to the inside of the exhaust pipe. Channels 4 are oriented circumferentially to the circumference of rotation of the blade rotor 1 and are formed around the perimeter of the discharge nozzle

3. By means of pipeline 5, channels 4 are connected to source 6 of superheated water vapor, which is made, for example, c. the form. steam boiler 7 with a steam boiler 8. The throwing apparatus operates as follows. As the plow motion moves, the blade rotor 1 is rotated by means of a drive station (not shown). The snow enters inside the fixed casing 2 in the axial direction, is captured by the blade rotor 1, accelerates and is ejected under the action of centrifugal forces through the discharge port 3 in the direction of arrow B tangential to the circumference of the blade rotor. In the same direction, through the channels 4, superheated steam is supplied from the source 6, which is formed in the steam boiler 7 and is heated in the steam boiler 8 to the required temperature sufficient to partially melt the surface of the snow fragments. Due to turbulent eddies in the discharge nozzle 3, superheated water vapor is intensively mixed with air and snow fragments, while part of the heat of superheated water vapor is spent on a slight increase in the temperature of the air passing through the inlet nozzle, and the rest of the heat for partial melting of the fragments cops of snow. The optimal mode of operation of the propelling apparatus in accordance with the angular velocity of rotation of the blade rotor 1 is determined by selecting rational values of the supercharged water vapor volume flow and its temperature, with the optimality criterion being the minimum power consumption at the maximum snow throwing distance. Partial melting of the surface leads to the merging and enlarging of snow fragments, which reduces the total area of their cross section, reduces the force, and the aerodynamic drag increases the snow throwing distance. The use of the invention allows to significantly increase the range of snow throwing by supplying additional energy directly to the throwing apparatus in the form of superheated water vapor. DETAILED DESCRIPTION OF THE INVENTION The throwing apparatus of a rotor snowplow, comprising a casing in which a vane rotor is attached to the shaft and attached to the casing of a discharge rotor. the side, on the inner surface of which the channels are oriented along its axis and communicated with a source of compressed fluid, characterized in that, in order to increase the efficiency of throwing snow by coarsening the particles of the latter during the movement along the exhaust nozzle, the source of compressed fluid is a generator of superheated steam and water. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 570668, cl. E 01 H 5 / O9, 23.02.76.

L

It j

crnOQ