Snow-removing machine
AssigneeReberle reg. Treuunternehmen Schaan
InventorsHans Gisler, Marcel Boschung
Life of this patent
Estimating the term…
Abstract
The sweeping brush of the machine is composed of two or more parts in order to maintain a constant pressure of the sweeping brush against the ground, to achieve faster clearance of the snow, and to avoid downtime for adjustments. These brush parts are swivellable relative to one another in a vertical plane. The common raising and lowering movement of the individual parts is controlled by a cylinder-piston unit, and the piston acting upon the brush parts is always impinged upon by a pressure opposite to the direction of movement. The individual brush parts may be connected to one another by torsion bars.
Claims5
A snow-removing machine comprising:
- a raisable and lowerable sweeping brush formed of a plurality of individual sweeping brush portions and means mounting said brushes for pivotal movement relative to one another in a vertical plane,
- a plurality of cylinder-piston units, a separate unit controlling the raising and lowering movement of each of said individual sweeping brush portions,
- common means to supply pressure fluid to all of said units to actuate all of said units to raise and lower said plurality of brush portions, and
- counterpressure means in each of said plurality of units for causing the piston of said cylinder-piston unit to be impinged upon by pressure opposing the raising and lowering of the unit by said pressure fluid.
A method of operating a snow-removing machine having a raisable and lowerable sweeping brush formed of a plurality of individual sweeping brush portions pivotable relative to one another in a vertical plane to engage the ground, a plurality of double-acting cylinder-piston units, a separate unit controlling the raising and lowering movement of each of said individual sweeping brush portions, common means to supply pressure fluid to all of said units to actuate all of said units to raise and lower said plurality of brush portions, and counterpressure means in each of said plurality of units for causing the piston of said cylinder-piston unit to be impinged upon by pressure opposing the actuation of the unit by said pressure fluid, comprising the steps of:
- when raising the portion, adjusting the pressure of the pressure fluid supply in each unit to apply to the piston of the cylinder-piston unit a pressure corresponding to the weight of the individual sweeping brush portion in the direction for raising the sweeping brush portion, and
- when lowering the portion, applying pressure fluid from the common means to one side of the piston in the cylinder-piston unit for lowering each portion, and applying to the opposite side of the piston a pressure fluid providing a counterpressure corresponding to the weight of the individual brush portion so that the pressure fluid applied for the purpose of lowering the sweeping brush portions provides the desired pressure on the ground.
Dependencies are inferred from the claim text.