A hydrostatic sewer cleaning machine

Details A hydrostatic sewer cleaning machine A hydrostatic sewer cleaning machine

B - Operations, Transporting

08

B

B08B 9/02 (2006.01) E03F 9/00 (2006.01)

Patent

CA 2227720

A hydrostatic sewer cleaning machine for driving a cable and cleaning tool in from 6 inch to 30 inch diameter sewer lines. The sewer cleaning machine comprises a wheeled base having a baffled hydraulic fluid reservoir therebeneath and an inverted U-shaped operator's handle at its rearward end. A prime mover, a hydraulic pump and a hydraulic motor are mounted on the base. The primer mover drives the hydraulic pump which is connected to the reservoir. The hydraulic pump is connected to the hydraulic motor. The hydraulic pump has a control valve which controls the direction and the amount of flow of the hydraulic fluid to the hydraulic motor. The pump control valve is operated, via a cable, by a control lever mounted on the operator's handle. The pump also has a manual relief valve by which the static pressure in the system can be released. The hydraulic motor output is connected through a slip clutch to the cable which drives an appropriate remote cleaning tool. The sewer cleaner can have its speed controlled and be immediately and directly shifted to any one of forward, reverse, and neutral, by the control lever. Full torque is available, throughout 95 percent of the rpm range of the hydraulic motor in both forward and rearward directions.

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