RU2025555C1 - Sweeper picker - Google Patents

Abstract

FIELD: municipal vehicles. SUBSTANCE: picker has pipeline 1 with delivery nozzle 2, housing 3 and suction nozzle 4. Hinge-mounted on lower part of suction nozzle 4 is apron made up of plate 5 which mounts guide part 6 installed for free longitudinal movement. Bottom 9 of suction nozzle 4 is of wave-shaped form with holes 10 on wave crests. EFFECT: enlarged operating capabilities. 3 dwg

Description

 The invention relates to the field of municipal engineering and is intended for use as a working body of street sweepers.

 Sweeping machines provide cleaning of urban roads with asphalt pavement from estimates, loading it into the storage hopper, transportation to landfills and mechanized unloading. As the main working bodies, brush devices are widely used in combination with pick-ups, which ensure the collection of contaminants under the influence of the vacuum created in the storage hopper.

 A known pick-up sweeper machine containing suction and blowing nozzles successively located above the road surface, collecting dirt from the road and transporting the estimate to the hopper of the machine. A design feature is the possibility of additionally supplying compressed air to the surface to be cleaned with blast air at an angle that is equal to or less than the angle of impact of the blast air [1].

 A disadvantage of the known pick-up is its complex design, which requires an additional energy source and does not provide efficient operation on uneven road surfaces.

 Known pick-up sweeper mounted on the road surface, comprising a housing, a discharge and a suction nozzle, on the lower edge of the last of which is installed an apron that rotates around the transverse axis [2].

 The disadvantage of this picker is that when hitting a pit (ledges) of the road surface, the front apron, turning on a hinge, changes the angle of inclination, which significantly affects the nature of the interaction with the air flow and the mass of the transported estimate, causing disruption of the air flow and deterioration of the material moving process into the bunker.

 The purpose of the invention is to increase the efficiency of the pick-up when hitting an uneven road and improving the system for transporting material into the hopper of the machine.

 This goal is achieved by the fact that in the pick-up, mounted above the road surface, comprising a housing, a discharge and a suction nozzle, on the lower edge of the last of which an apron is installed, rotatable around the transverse axis, the apron is made of parts interconnected with the possibility of free longitudinal movement of one of them, when in contact with the road surface, is relatively different, and in the suction nozzle the lower guide surface is made undulating in the longitudinal direction of the nozzle with holes central areas of these cavities to communicate with the atmosphere.

 Figure 1 shows a pick-up, general view; figure 2 is a view of figure 1; figure 3 is a view of B in figure 1.

 The pick-up consists of a pipeline 1 with a discharge nozzle 2, a housing 3 and a suction nozzle 4. On the lower part of the suction nozzle 4, a swivel apron is mounted pivotally, consisting of a plate 5, on which the guide part 6 is mounted with the possibility of free longitudinal movement in longitudinal grooves 7 with fasteners 8. The bottom 9 of the suction nozzle 4 is made in the form of a wave with holes 10 at the tops of the waves.

 The pickup sweeper works as follows. A fan connected to the pick-up delivers air mass through line 1 to injection nozzle 2. Air flow, acting on estimates of the road surface, directs it to the area of the suction nozzle 4. Hitting the guide part 6 of the apron, the estimate changes the trajectory and enters the suction nozzle 4 and further into the hopper of a sweeper.

 To ensure a constant angle of inclination of the apron (copying the road) with respect to irregularities in the apron of the guide part 6, grooves 7 with fasteners 8 are made. When driving over the ledges (troughs) of the road, part 6 of the apron moves along the plate 5 of the apron in the fasteners 8 along grooves 7, maintains a constant angle of inclination, which ensures a stable nature of the pick-up. The apron is deflected only when hitting large obstacles (bricks, stone, etc.) and serves to protect the pick-up from breaking when the machine is moving.

 To reduce the friction of particles, the estimate on the bottom of the suction nozzle, as well as to increase the air flow rate, the bottom 9 of the suction nozzle 4 is made in the form of a wave with depressions relative to the midline with holes 10 in the area of the wave apex. The air flow, moving along a curved surface, creates a rarefaction in the area of irregularities (curvature) of the hollows of the surface. So, when the air-sand mixture moves along the bottom 9 of the suction nozzle 4, a vacuum is created in the troughs of the bottom 9 and air is sucked in from the atmosphere through the openings 10. As a result of this, the air volume in the suction line 4 increases, which, with a constant cross-section, leads to an increase in the air flow rate and, therefore, will increase the speed of transportation of the estimate to the machine hopper. In addition, the contact area of the estimate on the bottom 9 of the suction nozzle 4 is reduced, since the sucked-in air stream creates a layer of air that supports the estimates in suspension and reduces the friction force of the particles on the bottom 9, which reduces the energy consumption for transporting the material.

 Thus, the use of an articulated apron consisting of two parts in the pick-up design with the possibility of free mutual longitudinal movement in combination with a wavy bottom of the suction nozzle allows copying the roadway at a constant angle of inclination of the apron, as well as increasing the speed of transportation of the estimate to the machine hopper, which increases work efficiency.

Claims (1)

 Pick-up of a sweeping machine mounted above the road surface, comprising a housing, a discharge and a suction nozzle, on the lower edge of the last of which there is an apron rotatable around the transverse axis, characterized in that the apron is made of parts interconnected with the possibility of free longitudinal movement one of them in contact with the road surface is relatively different, and in the suction nozzle the lower guide surface is made undulating in the longitudinal direction of the nozzle with a hole With holes in the central zones of the troughs for communication with the atmosphere.

Images