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6.1.E.-Page5 <br /> CITY OF REDWOOD CITY <br /> Truck Mounted Continuous Rodder <br /> Technical Specifications <br /> 12-08-11 <br /> Control Station: <br /> All controls and instruments at a single location at rear passenger side of vehicle, all rod <br /> movements to be controlled by single unitized control handle. All gauges and controls to <br /> have engraved labels. Controls and instrumentation to include: <br /> 1. Throttle control, electronic linear actuator <br /> 2. Pressure Gauges: lateral, rotation <br /> 3. Pressure controls, lateral rod control, rotation rod control <br /> 4. Rod footage meter self canceling, and Rod footage meter Cumulative <br /> 5. Engine tachometer and hour meter, in separate gauges <br /> 6. Control panel light <br /> Rodder Mechanism: <br /> Frame Construction: Main frame of the power rodder shall be constructed from rectangular <br /> structural steel tubing. Tubing must be steam cleaned inside and out prior to assembly. <br /> Frame must have internal baffle in hydraulic section to insure complete heat dissipation and <br /> precipitation of solids from hydraulic fluid. Vertical uprights must be constructed so that the <br /> entire machine is at 15-degree angle to the rear to lower the height of the operator station. <br /> All welds by mig process. Frame leak tested to 5 PSIG. <br /> Reel Ca�e Housin� Construction: Reel cage housing to be constructed from rectangular <br /> structural steel tubing. All corners mitered and gusseted with 1/2" HR steel plate. Reel cage <br /> housing to be on main-frame by heavy duty pillow block bearing at two points with welded <br /> stops for rigidity. Housing to incorporate �ixed guide from drive head to rod reel. Guide to <br /> be spiral type to allow accumulated material to escape and must be constructed from .461 " <br /> spring steel wire for maximum wear resistance. Guide should also include adjustable roller <br /> to reduce stress on rod. <br /> Rod Reel Construction & Installation: Rod reel to be constructed from 7/8" diameter H.R. <br /> round stock. Reel to have a minimum of 12 spokes diagonally braced to hub. Diameter of <br /> completed reel to be 74" to prevent a"set" from occurring in 375" duct rod. Rod reel to <br /> incorporate flat band (3/16" x 4-1/2" H.R.) around circumference to reinforce spokes, <br /> provide area to support rod, and facilitate rod installation. Rod reel hub to be manufactured <br /> from 2" CR stressproof steel supported on each end by 2" four bolt flange bearings. Flange <br /> bearings to be mounted with wedge spaces to align bearings with angle of reel. Retaining <br /> ring to be fixed to reel cage housing to provide safe containment of rod in reel. <br /> 2 <br />