attachment-1-bid-183-26.pdf

Hydraulic Spreader - Stainless Steel - Dump Body Mounted Using Trucks Central Hydraulic System

11 Cubic Yard Minimum

GENERAL:

It is the intent of this specification to describe an all-purpose conveyor type hopper spreader body, constructed from 304 stainless steel throughout (including nuts, bolts, springs, fastener’s, piping, ¼” and smaller chains and hooks), that will be slipped into a dump body and used for ice control and covering road oils. The unit will be hydraulically operated using the trucks’ existing PTO driven pump and variable flow control valves. The installation will be performed by State personnel. All sharp edges shall be ground smooth and all sharp corners rounded to prevent injury to others.

BODY:

• The hopper shall have a minimum level capacity of eleven (11) cubic yards.

• The sides, ends and sills shall be unitized fully welded fabrication (side extensions not allowed) using a minimum 10 gauge 304 stainless steel (A certificate of compliance will be required from the successful vendor).

• Bottoms of sills shall be formed outward to facilitate cleaning.

• The sides shall be formed one piece without splicing.

• The front wall shall be sloped to eliminate bridging of material and the rear wall to be 90°degree from the floor (not sloped).

• Top of sides and ends shall be channel formed with welded mitered corners.

• Each side shall be supported by at least six (6) ea. gussets formed from 7 gauge 304 stainless. Gussets to be stitch welded and staggered with a minimum of 4ʺ+/-1” overlapping beads on each side.

• Four (4) ea. heavy duty stainless steel lifting eyes, rings or hooks allowing a min 2” opening to accommodate lifting hook with a safety latch shall be located on front and rear ends of body to provide proper balance for lifting the hopper from the dump body.

• A heavy duty, full width fitted rubber strip shall be attached to front of sander to reduce salt from spilling out by the conveyor chain.

• Hopper sill shall be supported on seven (7) ea. 3” wide X 2” deep maximum X 5/16” thick stainless steel cross channels at base.

• Two (2) ea. 3” wide X 2” deep maximum, 5/16” thick, 158” long 304 stainless steel channels (or 304 stainless steel 3”x 5/16” structural channel) below the cross channels running front to rear with a full radius at the front and shall be shipped loose for State personnel to locate.

• Rear discharge chute area of body sill shall be double thickness stainless, fish plated and fully welded at a minimum of 36” from end of sill and further braced for strength.

• The discharge gate shall be 304 stainless, at least 7 ga. with added brace to resist bending and fully adjustable through a heavy duty curbside jack screw type adjustment which shall be a Model #T2103 Manufactured by Canimex or approved equal.

• Position of the gate shall be calibrated.

• The bottom of the gate shall have a 3” full width ½” thick flexible seal strip that extends 1-1/2” below the gate.

• The seal strip to be mounted to the outside of the gate and attached with 4 ea. 3/8” stainless steel fasteners through a full width piece of 1-1/2” X 7 ga. minimum flat bar.

• Eight sectional stainless steel screens (min.) shall be furnished and secured with a minimum of three (3) ea. stainless steel hinges each to a stainless steel 3½” ID heavy duty pipe or structural member with equal resistance to bending, running longitudinally at the center of the hopper and one (1) ea. 3” stainless steel channel iron located midway directly under longitude beam, running horizontally to further support the longitude beam and strengthen sidewalls.

Pipe or structural member to be recessed and not rest on top of sander. Screens to be resting flat on top of sander.

• Screen frames shall be 2” X 2” X 1/4” stainless steel angle.

• Screens shall be made of 1/4” diameter stainless steel woven wire or larger, forming a 2-1/2” square opening.

• Woven wire to be positioned on the underside of the SS frames and welded on every rod around the perimeter. The screen frames shall rest inside of the sander lay flat and not increase the overall height of the spreader by more than the material used to make the grate system.

11 CUBIC YARD 304 STAINLESS STEEL SPREADER (con’t)

• Unit dimensions shall be suitable for mounting in a dump body 162” long, 84” wide, and 42” deep, with a loaded floor height of 56”.

• Unit shall be capable of being mounted within 4” of the front of the dump body.

• Two (2) ea. adjustable hold down devices shall be provided for installation by DOT personnel.

• Each device shall consist of a 6” section of 3/8” Grade 8 chain, welded on each end to a 6” section of ¾” Grade 8 threaded rod (with nuts) per attached sketch.

Two (2) ea. stainless steel (unattached) angle brackets provided shall be 2” X 2” X 3/8” X 3”L and include a 13/16” hole centered on one side.

CONVEYOR:

• Conveyor sprockets for front, rear and mid support under floor idler shaft shall be cast, (flame cut sprockets are unacceptable).

• For standardization purposes, the distance between conveyor shaft drive sprockets shall be 20” O.C. and the conveyor drive shaft can be 1-3/4” or 2” diameter.

• All bearings shall be sealed and self-aligning.

• Two (2) ea. ¾” heavy spring loaded cadmium plated adjustment screws with a minimum of 6” adjustments shall be provided to maintain proper conveyor adjustment.

• A replaceable stainless steel conveyor chain shield shall be bolted on over the chain.

• Bridge over conveyor shall be supplied if necessary to assure conveyor operation in all valve settings.

• Chain shall be open pintle type rated at a minimum average ultimate strength of 30,900 lbs. per side with cross bar flights made of 3/8” X 1-1/4” steel located on not greater than 4-1/2” centers.

• Pintle chain to weigh 2.56 lbs per foot, thickness of link to be 0.2000. (Drives Brand model D667KC is indicative of the size pintle chain required).

• Vendor to provide specification documentation for chain supplied before or upon delivery.

Conveyor shall operate on a bolt on replaceable 3/16” wear plate made of 304 stainless steel which will rest on a minimum 1-1/2” X 1-1/2” X 3/16” stainless steel angle iron running longitudinally along both sides and not on individual cross members to reduce the potential for high and low wear surfaces of the floor.

CONVEYOR DRIVE:

• Worm gear speed reducer shall have a speed reduction of 25:1 to fit the 2” conveyor drive shaft without bushings, adapters or reducers with thru-drive capability for a feedback sensor and shall be spaced out off of the side of the spreader at a minimum of one quarter inch (¼”) to allow water to drain out.

• Worm gear shall be a hardened and polished gear, running/bathed in oil and driving an aluminum-bronze worm wheel.

• All pipe plugs in cover and case housing to be hex or square head brass or bronze.

• Gear box cover to have drain plug at six (6) o’clock position.

• Relief style vent to be located on top of case housing.

• Speed reducer shall be mounted on the left (driver’s) side of the hopper.

Hydraulic motor used for 25:1 conveyor drive shall be a Char-Lynn Model “S”, number 103-3398-012 with a 60 pulse sensor and a M12 style connector and shall include a Compu-spread right angle adapter cable with power indicator, part number 124213.

DISTRIBUTOR:

• The spinner disc shall be 7 gauge stainless steel, 18” diameter with six (6) each straight replaceable stainless steel vanes.

• Material shall be guided from conveyor end to center of distributor disc by an enclosed minimum 8” X 18” rectangular stainless steel flip up (hinged) chute that shall provide means of changing direction of spread pattern.

• The spinner shall be driven by a Char-Lynn Model “H” hydraulic motor, #101-1001-009.

• Spinner shaft shall be supported by two sealed, lifetime lubricated bearings or spinner shall be attached to the hydraulic motor.

11 CUBIC YARD 304 STAINLESS STEEL SPREADER (con’t)

• Distributor shall be capable of placing a windrow of material behind and to the outside of the rear wheels on the driver’s side and shall consist of a stainless steel chute that attaches to distributor at a minimum 50° degree angle and intercepts material before it hits spinner, delivering material in a windrow.

• Spinner height shall be adjustable to 15” 18” and 21” above the ground when unit is mounted in a body with a loaded floor height of 56”.

• A minimum of three adjustable stainless steel baffles shall be provided to control spread width and direction.

HYDRAULIC SYSTEM:

• Hydraulic power shall be provided from existing pump.

• All hydraulic supply and return piping shall be rigid stainless steel.

• Piping to be located on left (drivers) side of hopper, installed through drilled/punched holes that are 3” in from the outside edge of the six (6) vertical gussets.

• Pipes to be separated at least 3” O/C from each other and tack welded to all gussets.

• Return oil piping shall be 1-1/4” nominal I.D. and shall be installed 24” up from bottom of skids and be fitted with a

“T” at the rear of the sander.

• Return hose from the conveyor gear box to the “T” shall be an Aeroquip FC-510-12 series installed.

• Return hose from the spinner motor to the “T” shall be an Aeroquip FC-510-8 series uninstalled.

• Supply piping for conveyor shall be ¾” nominal I.D. and installed 27” up from bottom of the skids with an

Aeroquip FC510-12 series high pressure hose to conveyor motor installed.

• Supply piping for spinner shall be ½” nominal I.D. and be installed 30” up from bottom of the skids with an

Aeroquip FC510-8 series high pressure hose line to the spinner motor.

• Aeroquip swivel type connectors shall be used to connect all hydraulic components.

• All pipes to be the same length and staggered four (4) inches at front and rear. 1-1/4” return oil pipe with 90’ elbow in place and is not to extend beyond the front of the sander. (for example: if the 1-1/4” pipe is 4” from the front of the sander then the ¾” pipe would be 8” from the front of sander and the ½” pipe would be 12” from the front of the sander).

• All piping shall be cleaned, and shall terminate in National Pipe Thread with stainless steel 90° degree street elbow fittings pointing upward (parallel to sloping sides) at front and downward at rear with pipe threaded caps to protect threads.

• Each gusset on the left side will have an additional 1” hole in the area of the ½” stainless steel pipe to facilitate running a feedback sensor wiring harness.

LADDER:

• Supply one (1) each 10´ foot stainless steel ladder with a minimum of nine (9) rungs rated for 375 lbs. Bottom rung to be flush with sides. Shipped loose. To be attached to sander by State personnel upon fitting sander to truck.

EQUIPMENT:

• Furnish all manufacturers standard equipment not in conflict with these specifications.

• All equipment furnished must comply with applicable State of New Hampshire and Federal laws.

• An instruction and parts manual shall be furnished with each spreader.

• MSDS’s: Manufacturer shall supply two (2) complete sets of Material Safety Data Sheets for all construction materials used in the construction of all equipment furnished before or upon delivery.

PAINT: None NOTE: The following brands of spreaders, when built to the above specification, are examples of quality and build this specification represents: Bonnell, Warren, Frink, Flink, Henderson, Hi-Way, Swenson Tarco and Tarrant.

Bidders shall submit a full description of their proposed spreader including detail drawings for the Departments review and approval