261-60-14 Contract Spec SS Spr~2.docx

Specification No. 261-60-14 Specification No. 261-60-14 Specifications and Questionnaire for Stainless Steel, Under-the-Tail-Gate Material Spreader State of Illinois Department of Transportation Bureau of Business Services Specifications and Questionnaire for Stainless Steel, Under-the-Tail-Gate Material Spreader October 2022 This specification is for under-the-tailgate, gearbox driven, spreaders for snow and ice control operations. Spreaders shall have a hydraulic-powered auger feed and spinner drive that must be compatible with the existing hydraulic system on Department of Transportation dump trucks. This system includes a "load-sense" hydraulic pump with electronic "closed-loop" spreader control.

It is the responsibility of each bidder to complete and return this questionnaire with the bid.

Bidders are advised to carefully read these specifications.

Proposed with this Bid:

Note: If the equipment proposed exceeds the minimums called for in the specification please do not mark NO. Mark Yes and explain with a short comment on how it exceeds.

Type:

Hydraulic-powered, 5:1 gearbox, under-the-tailgate type spreader for mounting on standard IDOT 5 cu. yd. and 9 cu. yd. dump bodies.

Complies: |_| Yes |_| No The spreader shall be equipped with a single point connection Hydraulic Interlock device to positively prevent hydraulic pressure from reaching the auger/gearbox motor when the top cover, bottom trough door or chain guard cover are opened beyond the normal operating position. See picture attached for reference.

The Hydraulic Interlock for spreaders protects operators in two areas of the spreader:

· The cleanout trough at the bottom of the spreader cannot be opened until the motor hydraulic pressure hose has been disconnected, a lever is actuated to allow the trough to open and prevent pressure hose to be reconnected. This prevents the auger from turning when the trough is open.

· The top cover cannot be opened beyond 90° of horizontal until the motor hydraulic pressure hose described above has been disconnected and lever actuated to allow the top cover to open, lay flat or be removed. This prevents the auger from turning when the cover is being opened beyond 90°.

Complies: |_| Yes |_| No The spreader assembly shall be constructed using U.S. Domestic 201 austenitic stainless steel or equivalent corrosion resistant U.S. Domestic non-magnetic stainless steel. A copy of Certification of Compliance shall be included with spreaders delivered to each location. Welding shall conform to Certified AWS standards and practices. All seams and joints will be 100% welded. All sheared or cut edges shall be ground, radiused, or “eased” to prevent injury.

Complies: |_| Yes |_| No

Parts that are non-stainless will be described below. All fasteners, washers and hardware items shall be 304-grade stainless steel or equivalent.

Complies: |_| Yes |_| No The spreader must include an "easy cleanout" trough design meeting the requirements outlined below.

Complies: |_| Yes |_| No The following items may be constructed of materials other than 201 austenitic stainless steel or equivalent corrosion resistant non-magnetic stainless steel.

· Hydraulic motors

· Bearings and shafts

· Auger

· 5:1 Gearbox

· Spinner Plate and fins All other spreader parts shall be corrosion resistant non-magnetic stainless steel of a thickness specified or required for strength and durability of the product.

Complies: |_| Yes |_| No

Feed Trough:

The trough shall be constructed of a minimum 7-gauge stainless steel.

The trough shall have 9” end plates above the top surface of the trough and be drilled to accept optional side extension plates.

Complies: |_| Yes |_| No

The end plates shall be constructed of not less than 1/4” thick stainless steel.

A set of 201 austenitic, stainless steel 1/4” thick extension plates, shall be fabricated to fasten on the ends of the spreader end plates. The extension plates, approximately 17” in height, shall taper from 6” out at the top to full width at the end plate on the spreader approximately 16” wide. The extensions shall be drilled, notched, and formed to function as a seamless end plate when installed. The plates shall not obstruct use of banjo plates/chain keepers on corner of dump body. All required hardware for mounting shall be included.

The length of the spreader and trough opening shall be not less than standard dump body tailgate opening.

Complies: |_| Yes |_| No The material drop shall be at the left end (street side) of trough. The opening in the trough shall start at the end plate.

Complies: |_| Yes |_| No

The trough design shall incorporate the easy cleanout feature and shall be sized to match the feed auger diameter proposed.

The rear upper cross member (above the trough) shall be a 4”x 2” stainless steel Z – channel with minimum thickness of 3/16” the full length of the trough.

Complies: |_| Yes |_| No

Easy Cleanout Trough:

Design:

The easy clean feature must provide for simple one-man operation for release, cleaning, and closing. Designs requiring removal or extensive lifting and repositioning of the cleanout cover will not be considered.

Easy cleanout feature shall be a hinged lower trough design or a combination of a hinged trough and rear wall. The hinged lower trough shall swing clear of the auger to allow material to fall through the auger area and simplify the removal of any blockage. The trough shall include a minimum of 1-1/2” depth reinforcing bends to support the hinge and latches running the full length of the formed trough assembly.

The lower trough shall have both a centered lifting handle and a right of center self-storing foldable handle that will allow the operator two handed lifting while wearing insulated gloves. The foldable handle shall allow the operator to swing the handle out for added leverage to lift the lower trough. Handle shall be approximately 14” long extended. Design shall be reviewed with IDOT representatives prior to production.

The hinge(s) shall be designed to maintain proper sealing between the upper and lower sections of trough. A minimum of three (3) hinge points shall be formed by bending the 7– gauge stainless steel forming a clevis type pivot hinge. The pivot pins shall be 1/2“ diameter stainless steel pins to prevent premature wear.

Complies: |_| Yes |_| No Pre-Wet Bar:

A 3/4” 304 stainless steel pipe approximately 24” in length with a minimum of 11, 1/8” holes evenly spaced, shall be incorporated into the trough to apply liquid deicing material to granular material for mixing by the auger before discharged to the spinner. The pipe shall have a removable cleanout plug for maintenance. A weldment shall be added to support the pipe on the inside of the trough. A block off plate shall be included if pre-wet bar is removed and located to spinner.

Complies: |_| Yes |_| No Locking Device:

The 7-gauge lower cleanout trough shall be locked in the closed position with two (2) independent, adjustable captive latches with safety retainers on each latch (see picture attached for reference). One latch shall be placed evenly between the center lift handle and the left end of the trough and one latch placed evenly between the center lift handle and the right end of the trough. Placement of the latches shall prevent the operator from overreaching to latch the trough. The latches shall be built to allow for future adjustment. The design shall allow a single operator to lift and latch safely. Steel pins with hairpin clips, latches mounted on the ends of trough, and non-adjustable latches will not be accepted.

Complies: |_| Yes |_| No

Note: The Department of Transportation reserves the right to approve or reject cleanout mechanisms, based on previous experience and/or test of sample units installed on Department trucks.

Trough Cover Plate:

Type:

The stainless steel cover plate shall be the full-width, full-length type, hinged design to permit dumping of any material over the spreader with no accumulation of material in the spreader trough.

Design:

The cover plate shall be a dual-purpose design incorporating a portion of the rear trough wall/spill plate, constructed of #7-gauge minimum thick stainless steel.

Complies: |_| Yes |_| No Operation:

The cover plate shall be hinge mounted for easy one-man positioning to both the open and closed positions and shall be designed for one-man removal from the spreader without tools. In addition to the handles on each end, the cover plate shall also have a handle located in the center.

Complies: |_| Yes |_| No Feed Auger:

Type:

The feed auger shall be constructed of mild steel, of continuous flighting with continuous 4” pitch per the spreader manufacturer's recommendations.

Complies: |_| Yes |_| No The auger tube shall be a minimum 2-7/8” diameter, constructed of schedule 40 pipe. Flight thickness shall be no less than 3/8”. Flight spacing shall be approximately 4” center to center. The outside diameter of flights shall be 6”. Discharge shall be at the far left end of the trough.

Complies: |_| Yes |_| No

Auger Bearings:

The auger shall be mounted in 1-1/4” painted, or powder coated, mild steel housed, sealed, self-adjusting, ball bearings. The bearings shall be mounted on the exterior of the trough end sections in flange supports. The flange supports shall be a minimum two (2) bolt design fastened with stainless hardware.

Note: Grease zerks shall be easily accessed without tools.

Complies: |_| Yes |_| No

Auger Drive:

The feed auger shall be driven by a 5:1 gearbox, driven by a hydraulic motor and attached to the auger shaft through a HDPE bushing. The hydraulic motor and gearbox shall be mounted on the passenger (RH) side of the truck.

Pulse Generator:

The Auger Drive Hydraulic Motor shall have an integral built in speed sensor. The speed sensor shall supply a minimum of 100 pulses per revolution. The speed sensor shall include a Brad Harrison type of connector to the unit.

Complies: |_| Yes |_| No

The right endplate for the gearbox and motor shall be offset and include the gearbox mount, hydraulic interlock linkage and be within the width of the dump body.

Anti-Flow Plate:

A stainless steel, anti-flow plate or baffle covering the trough discharge hole above the auger shall be provided to prevent material flow when the auger is not turning.

Complies: |_| Yes |_| No The anti-flow plate shall be securely attached to the inside of the trough without the use of hairpins or clips. The plate shall be easily removed for cleanout without tools.

Complies: |_| Yes |_| No Truck Mounting Hardware:

The spreader trough shall mount to the truck dump body, utilizing single pin "quick-detach" type hardware and upper support brace on each side. The mounting brackets shall be fabricated to allow access for greasing the tail gate cross shaft. The brackets furnished shall mount to the truck body without interference to tailgate closure functions or any other dump body feature. The truck side bracket shall be secured using stainless bolts, nuts, and washers. The spreader shall also be furnished with two (2) shields to mount on the inside of the tailgate to prevent salt from spilling over the end plates or mounting brackets. All brackets and tailgate shields shall be 304 stainless or 201 austenitic stainless steel. Without exception, all fasteners, washers and hardware items shall be 304-grade stainless steel or Department of Transportation approved equivalent.

Complies: |_| Yes |_| No

Feed Rate:

Utilizing dry road salt, the spreader feed auger shall, on average, deliver no less than 5 lbs., nor more than 7 lbs. of salt per revolution.

Complies: |_| Yes |_| No

Note: Spreaders unable to meet this feed rate requirement will not be accepted. At the request of the Department of Transportation, the successful bidder shall demonstrate that the feed rate and spread rates submitted in the calibration chart are accurate.

The spreader must be designed to spread 500 pounds + 50 pounds of dry salt per lane mile at truck speeds of 25 MPH or 50 MPH. The spreader must also function smoothly at low settings and low speeds.

Complies: |_| Yes |_| No

Spinner Assembly:

The spreader shall be equipped with a direct hydraulic drive, single disc, distributing spinner assembly. The spinner shall be mounted 11” below the bottom of spreader trough, measuring to the top of the fin on the spinner. The spinner shall also be adjustable horizontally without the use of tools (vertical adjustment requires simple tools).

Complies: |_| Yes |_| No The spinner shall be designed to evenly distribute material over an adjustable width of 4’ to 25’.

Complies: |_| Yes |_| No

The spinner must be capable of spreading material no less than 12’ left of the truck.

The design shall include a self-leveling device to keep the spinner disc parallel to the road at any dump body angle.

A deflector shield to the rear of each spinner shall be furnished with bracket for variable orifice nozzle with deflector when pre-wet bar is removed from spreader trough.

Complies: |_| Yes |_| No The spinner mounting shall be adjustable to provide for variation of spread width and direction without requiring tools. The spinner assembly shall adjust from left to right. When spinner is adjusted to full street side (left) it shall be partially visible in operator’s rearview mirror.

Complies: |_| Yes |_| No

The complete spinner assembly shall be designed for easy one-man mounting and removal from the spreader.

Spinner Construction:

A polyurethane, high visibility color, spinner disc assembly with six curved and molded fins shall be provided.

Complies: |_| Yes |_| No

Hydraulic Motors:

The hydraulic drive motors for the auger and the spinner shall be of a standard geo-roller design and mount.

Complies: |_| Yes |_| No The auger hydraulic motor shall be a geo-roller type designed to provide rotation in severe loading conditions with revolutions to provide material discharge at a variety of rates.

Complies: |_| Yes |_| No Component:

The spinner motor shall be a geo-roller design capable of generating RPM to provide the spread width specified. The motor assembly shall include a re-lubable seal saver to prevent premature seal failure of the spinner motor.

Hydraulic Hose and Couplings:

Hydraulic hose and hose couplings are required for the complete circuit of the Hydraulic Interlock system. The single point connection coupler shall include a sleeve-retraction facilitator for connecting or disconnecting in inclement weather.

Complies: |_| Yes |_| No Note: Coupler material, coatings and connection shall be designed for highly corrosive environments (i.e., Faster Zinc-Nickel or equal) Hydraulic motor parts shall be designed to accept standard hydraulic ORB fittings.

Complies: |_| Yes |_| No Service Requirements:

The awarded vendor/bidder shall maintain an adequate supply of spreader repair parts for the more common wearing parts such as augers, gearboxes, bearings, hydraulic motors, etc., which can be furnished to any District Engineer within 24 hours after parts are requested.

Complies: |_| Yes |_| No A copy of the parts/price list for the proposed spreader shall accompany the bid. The price list shall be the latest available printing.

Complies: |_| Yes |_| No

Parts Books:

At least three parts books and operator's instruction and maintenance manuals covering the spreaders shipped to each district shall be furnished and shipped separately to each District Engineer. An operator's instruction and maintenance manual, and an installation chart shall be furnished for each unit delivered.

Note: The manuals, parts lists, and service or shop manuals listed above may be furnished on flash drive in lieu of paper.

Warranty:

Full coverage warranty on all components and installation for a minimum 12 months from date put in service shall be provided.

The vendor or manufacturer of the unit which is seriously considered for award shall, at the request of the State of Illinois, demonstrate this equipment at a location chosen by the State and in the presence of authorized State personnel to prove out any features which may be in question.

Complies: Yes |_| No |_| Finish:

The stainless steel parts of the spreaders, including spinner assembly, shall be cleaned and delivered with an unpainted finish. All other exterior components shall be painted or powder coated flat black. All edges and holes shall be de-burred and ground smooth. All weld splatter shall be removed from the surface adjacent to any welded area.

Complies: |_| Yes |_| No Labels:

Warning labels shall be located to advise of possible risk or injury due to moving parts.

Complies: |_| Yes |_| No Delivery:

Delivery shall be made by truck to the destination as described on the order. The type of truck used for delivery shall be such that unloading can be accomplished by tractor end loaders or forklift. Trucks which cannot utilize this type of unloading equipment will be responsible for unloading.

Does the unit proposed meet the specifications? If No to any portion, explain:

Bid Response:

Bidders should send copies of each of the following with their bid response.

a) Specification Questionnaire

b) Descriptive Literature

End plate with gearbox

Hydraulic safety interlock

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