Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1983-02-25
1985-01-01
Roberts, Edward l.
Brushing, scrubbing, and general cleaning
Machines
Brushing
E01H 104
Patent
active
044908741
ABSTRACT:
Brush control means for controlling the operative position of the rotary brushes of a road or like sweeping machine comprises an electronic control unit operated by a driver's controller for controlling the operation of a valve, which in turn controls the operation of a hydraulic ram connected to the brush mounting for angularly moving the latter laterally about its pivotal mounting on the machine. A sensor such as a linear transducer operated by the ram is responsive to the operative position of the brush mounting as selected by the control unit for operating the valve to hold the ram against operation and hence the brush mounting against outward lateral movement from the selected position. Yieldable continuous low pressure operation of the brush mounting in the outward direction is preferably provided whereby the mounting is able to yield inwardly when the brush encounters an obstacle such as a curb. The brush mounting may be also protected by a fender arranged to operate a sensor or switch for effecting operation of the valve through the control unit for causing the ram to move the mounting in negotiating an obstacle. A further sensor may similarly effect ram operation of the brush mounting in response to operation of the steering gear of the machine.
REFERENCES:
patent: 3790981 (1974-02-01), Young
Roberts Edward L.
Schmidt Manufacturing & Equipment (UK) Ltd.
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