257-60-05 Plow High Mold Rev Ext Ears 6x6.docx

Specification 257-60-05 Specification 257-60-05

Specifications and Questionnaire for a High-Moldboard Trip Type, Reversible, Snowplow with Extended Discharge Chutes

State of Illinois Department of Transportation Bureau of Business Services

Specifications and Questionnaire for a High-Moldboard Trip Type, Reversible, Snowplow with Extended Discharge Chutes

July 2022

This specification and questionnaire describes a high-moldboard trip type, reversible, snowplow with extended discharge chutes for use on 6x6 tandem axle trucks operated by the Department of Transportation.

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: Single numbers in italics and parenthesis correspond to the numbers on the attached photographs only to provide a common definition of terms and parts.

Do not scale from photographs.

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.

Description of Construction:

The snowplow assembly shall be constructed using U.S. Domestic steel. A copy of Certification of Compliance shall be included with snowplows delivered to each location. The Certification shall verify the steel origin and tensile strength.

Complies: |_| Yes |_| No Welding shall conform to Certified AWS standards and practices. All seams and joints will be 100% welded. All pins and hardware with the exception of the cutting edge hardware shall be zinc plated.

Complies: |_| Yes |_| No 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.

Moldboard (1):

Length to be called for in the Bid - 11’0”

Height Minimum - 41" Approximate Maximum - 44" measured from the bottom of the cutting edge to the highest inside point of the moldboard.

Left and Right Extended Chutes (ears) – 10” to 14” extension from moldboard with reinforcing ribs and clearance at lower edge for curb guards.

Extended Chute Height Minimum – 56” Approximate Maximum 60” measured from the bottom of the cutting to the highest inside point of the extension.

Complies: |_| Yes |_| No A minimum 10-gauge smooth rolled steel moldboard, shall be welded to the vertical ribs. Welds shall be full and continuous on both sides of the ribs, all reinforcing and at the bottom angle.

Complies: |_| Yes |_| No Length of cutting edge as specified by moldboard length in bid. The cutting edge shall be minimum 1/2” thick x 8” high, using AASHTO standard punching. The bottom angle shall be punched to accept carbide and standard steel cutting edges.

Complies: |_| Yes |_| No Note: In addition to the standard AASHTO punching the lower moldboard angle shall be punched to accept Segmented type blades (i.e. Polar Flex) without the use of adapters. The moldboard angle shall have integrated, or welded steel block stops to support the segment blade outer mounting bracket. IDOT is aware the lower moldboard angle gusset locations may have to be altered to provide additional punching. Final design and drawings will be reviewed with IDOT.

Complies: |_| Yes |_| No The top of the moldboard shall be reinforced with a minimum 2” x 3” x 3/8” structural angle (3). The top angle shall have pre-punched holes for attaching the rubber snow shield.

Vertical ribs (2): Shall be 1/2" wide, cut as a single piece. The base of the rib shall be e. plasma cut and tapered, with the top end welded to a minimum 2” x 3” x 3/8” moldboard top angle. Splicing of pieces is not acceptable. The radius of the rib must be uninterrupted.

Complies: |_| Yes |_| No Minimum of 8 ribs, ½” x 4” C-shape curved vertical ribs, per plow.

The six center ribs at the bottom angle shall be reinforced (7) to provide a minimum 1-1/2" thickness for connection at the push frame lugs.

Complies: |_| Yes |_| No Steel reinforcing plates, 1/2” thick, shall be welded to each side of the rib, moldboard and the bottom angle. They shall extend above the center of the pin a minimum of 7”. The reinforcement plates shall be the full width of the rib with the top of the plate(s) cut at an angle to the bottom angle.

Complies: |_| Yes |_| No The remaining ribs shall be placed as follows: One at each outer edge of the moldboard and the remaining ribs equally spaced between the end of the moldboard and the outer push frame lug. The left and right outer ribs shall have two integral .375 x .750 slotted holes for marker installation.

Complies: |_| Yes |_| No Horizontal Ribs (4): Two 3” x 3” x ¼” structural angles shall be evenly placed horizontally between ribs 1, 2, 3, 6, 7 & 8. Two 3” x 3” x ¼” structural angles shall be evenly spaced horizontally between ribs 4 & 5. Two 3” x 3” x ½” structural angles that are boxed with ¼” plate, shall be evenly spaced horizontally and vertically between ribs 3 & 4 and 5 & 6. These ½” boxed angles shall anchor the ¾” plate top spring mounts.

Complies: |_| Yes |_| No Moldboard bottom angle (13) shall be a minimum 4" x 4" x 3/4" structural angle.

Moldboard bottom angle shall be reinforced (12) every 12” between bolt holes and at each end of the bottom angle with ½” stock welded in place Complies: |_| Yes |_| No Moldboard radii shall include the deflector shield and a 12” deflector of rubber belting bolted through a continuous 3/16" x 1-1/2" flat with extended tabs at each bolt hole held by the top structural angle. The rubber deflector shall be a minimum 3/8” thick and 12” in width the full length of the moldboard.

Complies: |_| Yes |_| No

The moldboard and deflector shall be conducive to carrying large volumes of snow and affording protection from snow and spray carrying onto the windshield.

Complies: |_| Yes |_| No The moldboard, including integral shield, when the cutting edge is at a 7 degree attack angle, shall measure approximately 25-1/4” from the blade to a line dropped from the corner of the shield angle.

The push tube shall connect to the center six ribs. The 1-1/4” attachment pins shall be machined from 1045 material, plated and retained with a machine washer and roll pin.

Complies: |_| Yes |_| No The moldboard shall include two orange LED lighted markers (6) mounted at the forward outermost corners of the snowplow. The markers shall be a minimum 30" to maximum 36” tall x 3/4" diameter. Wiring shall be continuous, outer fiber or plastic sheathing for protection and securely fastened to the moldboard. Allowing for full trip of the moldboard, wiring shall terminate at plow hitch with Weather pack type connection including female portion for installation on truck at later time.

Component:

Compression Spring Trip:

The compression spring trip shall consist of a minimum of two (2) springs with mechanical slides inside, mounted on an angle iron frame (enclosed cannon types will not be considered).

Complies: |_| Yes |_| No Minimum requirements:

The springs shall be constructed of AISI 5160H steel. The OD of the spring 5-5/16” with a solid capacity of 4234# and a compression rate of 319# per inch. There shall be a total of 14 coils in each spring. Each spring shall be approximately 6” in outer diameter, 23 ½” long of ¾” wires. The spring assembly shall attach to the plow moldboard by means of two (2) steel ears which will allow for three (3) different settings. Ears are welded to 4” x 3” x 3/8” horizontal angles welded between vertical ribs.

The plow shall remain level when lifted and reversed.

Complies: |_| Yes |_| No Moldboard shall reset after passing over obstacle.

Complies: |_| Yes |_| No

The angle of attack shall be easily adjustable by pins and at least three (3) adjustments.

Complies: |_| Yes |_| No

Note: This is the only trip mechanism acceptable to the Illinois Department of Transportation. Substitutions will result in disqualification of the bid. Alternatives will be considered outside of this bid. Any successful alternatives may be included in future specifications should they prove to be a safe and functional alternative.

Push Frame:

Shall be connected to the six reinforced vertical ribs, using 1-1/4" pivot pins (8) and attached to a minimum 4” x 4” x 3/8” tubular structural member.

The pins shall have large, thick flat heads and machined for roll pins. They shall be installed with a machine washer on the pinned end.

Complies: |_| Yes |_| No Push frame: Shall be manufactured of structural members of properly reinforced steel. Semi-circle shall be formed from a minimum 3-1/2” x 3-1/2” x ½” structural angle reinforced with additional ½” angles and plate. The “A” frame is to be constructed with 4” x 13.8 lb. ship and car channel, 5/8” plate, 1” plate and reinforced with ½” plate (9). The “A” shall pivot on a captured minimum 1-1/4” stress proof pin. The pin will rotate within a 2-1/4” OD x 3-3/4” long tube that is relubable and has an internal grease swirl. The frame shall be connected to the six reinforced vertical ribs, using 1-1/4" pins and attached to a 4” x 4” x 3/8” tubular structural member.

Complies: |_| Yes |_| No The push frame shall hydraulically adjust the plowing angle of the moldboard 35o right to 35o left and hold the plowing position without the use of a mechanical device.

Reversing mechanism:

The unit shall consist of two double-acting, hydraulic cylinders and constructed so that the reversing cylinders are mounted above the push frame (serviceable from the top) in such a manner as to not interfere with the complete tripping of the moldboard. Cylinders shall attach to the push frame – “A” frame assembly with brackets made of 5/8” A572 steel. The 1” stress proof cylinder pins and or cylinders, shall be easily removed or replaced without disassembling the plow.

Complies: |_| Yes |_| No The cylinders shall incorporate a minimum 3" diameter piston and 2" diameter nitride plated rod.

The cylinder piston shall use a molded glass filled nylon wear ring with a capped T-seal and nitrate static seal O-ring. The threaded head gland shall have polypak type B seal along with a Nitrite back-up ring, static seal nitrite O-ring, and a D520 Hythane rod wiper. The ports shall have .750-16 ORB work ports.

The circle A-frame stops (11) shall be located to allow the 35right and left angle without fully extending or contacting the hydraulic cylinders.

Complies: |_| Yes |_| No Stop blocks shall be positioned on the circle frame to prevent hydraulic over-stressing of the reversing cylinders. To prevent possible “pinching” of hydraulic hoses, stop blocks shall not overhang the circle frame width. Heavy duty, hard rubber stops shall be placed on the bottom of the front end of the push frame to prevent the tripped moldboard or blade from contacting the push frame.

Complies: |_| Yes |_| No Hydraulic hoses shall be ½” and rated for a 3,000 psi. working pressure. The whip hoses provided shall be 50” minimum in length. All hoses provided to connect to the truck shall be located on the driver’s side of the push frame of the plow.

Hoses shall be properly sheathed at sharp corners and routed to avoid pinching and cutting.

Complies: |_| Yes |_| No The oscillating A-frame channel shall be a minimum 7" MC Ship and Car channel weighing 22.7 lb/ft.

The ends of the oscillating channel shall be equipped with reinforced angles to prevent distortion of the oscillating plate and support the 1-1/2" diameter, Grade 8, oscillating bolt.

Complies: |_| Yes |_| No The oscillating channel shall have 1" thick push lugs to connect with 6X6 hitch adapter push frame 30 1/2" center to center, drilled to accept 1-1/4" pins.

Complies: |_| Yes |_| No It shall be the responsibility of the manufacturer to ensure that the plow can be angled and raised without contacting truck fenders or other interference.

Complies: |_| Yes |_| No

Plow Hitch Adapter for IDOT 6X6 Truck:

The snowplow shall include an adapter and lift cylinder to mount on an existing IDOT 6X6 plow hitch. The plow hitch and adapter are referenced visually below.

General:

Type - Custom heavy-duty "cheek-plate" type.

Plow use - Reversible, one-way, and V-type snowplows.

Push lug spacing - 30" center to center.

Connecting pin holes - 1 5/16" diameter holes.

Push lug height adjustment - Three sets of vertically spaced holes required in push frame and shall include one pair of tapered snowplow mounting pins with tether attached to push frame.

Complies: |_| Yes |_| No Construction and Design:

Constructed of heavy structural steel, including solid cheek-plates, designed to evenly transmit snowplow load to 6X6 plow hitch under continuous severe service. Cheek-plates to be a minimum ½” thickness, grade 50 material with a minimum ½” X 3” angle attached as a shear member. All components to be welded 100%. Grade 8 cap screws with top lock nuts and hardened flat washer on each side shall be used throughout.

Complies: |_| Yes |_| No Hydraulic Lift Ram:

Type - Single acting Ram size – minimum 3" diameter, nitride coated rod Stroke - 10" minimum Ram and packing - Gland type ram with chevron type packing and locking nut Hose - High-pressure type hydraulic hose Connection – cylinder port to be ORB Complies: |_| Yes |_| No Snowplow Lift Arm:

The snowplow lift arm shall be constructed of formed pieces of bar stock and shall provide triangular reinforcement to the lifting assembly, and reasonable lateral stability for a one-way, reversible, or “V” type snowplow.

Complies: |_| Yes |_| No The lift arm shall be manufactured from a minimum of two 1/2" x 3" pieces bar stock, welded to a 3/8” formed channel designed to receive a 3” tube. This assembly shall enable the arm to be adjustable in length.

Complies: |_| Yes |_| No A single piece of 1/4” plate shall be fashioned to match the shape of the top of the assembly and welded on for additional strength.

Complies: |_| Yes |_| No The rear of the triangle where the pivot hinge will attach to the push frame shall be approximately 20” wide.

Complies: |_| Yes |_| No A piece of 1” inside diameter, schedule 40 pipe shall be welded between the lift bars to provide a continuous bearing surface. Grease zerks shall be installed when needed.

Complies: |_| Yes |_| No A 1” diameter “stress-proof steel bar shall insert through this pipe and through the mounting ears on the push frame, being pinned on each end using large cotter keys. Welded bosses shall protect the upright angles from wear. The pipe shall contain a minimum of two (2) grease zerks for lubrication.

Complies: |_| Yes |_| No Adjustable center member of the lift arm assembly shall be approximately 32” long. Four (4) 1 1/16” holes shall be bored through on the centerline of the center member. The first shall be 2 1/2” from the end.

Complies: |_| Yes |_| No The underside of the tubing below this first hole shall be relieved approximately 4 3/4” to allow a lift pulley assembly to be installed and hang freely.

Complies: |_| Yes |_| No The second hole shall be 9 inches from the front end. The remaining holes shall follow the second on 4” centers.

Complies: |_| Yes |_| No The front of the adjustable center member shall have three banjo type chain eyes punched in 1/2” plate that will accept 1/2” chain welded to it.

Complies: |_| Yes |_| No The plate shall be formed so the side banjo eyes are at an approximate 45 degree swept back angle from the flat front banjo eye. Assembly shall be of sufficient design to support the weight of any plow.

Complies: |_| Yes |_| No Does Unit Proposed Meet or Exceed Above Specifications?

Items below are for visual reference only. Do not scale from pictures.

Standard 6X6 V-Plow Hitch Plow Hitch Adapter Required

The push frame, moldboard assembly shall be equipped with proof-coil level lift chain pick assembly to lift and carry the plow supplied to the push frame of an IDOT dump truck.

Attached to the Push Frame immediately behind the pivot bolt, shall be a plate welded to either channel. A “top wind” style screw jack shall be mounted on a detachable collar and attached to the plate. The screw jack shall be removable without the use of tools. The jack shall be rated for 3,500 lbs. The jack, mounting and mounting location will be subject to review during pilot model inspection.

Component:

All plows shall be equipped to provide for field installation of casters at a later date without modification.

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

Prior to assembly and powder coating all exterior steel surfaces including the outer face of the steel moldboard, shall be prepped to properly clean the surface of all mill scale, oil, rust, or foreign material.

Complies: |_| Yes |_| No The metal shall be properly treated after media blasting to provide a proper surface for application of the powder coat finish.

Complies: |_| Yes |_| No Prior to assembly of the plow structure the front and rear face of the moldboard shall be powder coated flat or satin black to reduce glare.

Complies: |_| Yes |_| No Inspection:

The Department of Transportation reserves the right to inspect plows at a manufacturer's plant or have a pilot model shipped for inspection to one of the delivery destinations prior to delivery of the remaining order to the various destinations. When inspection is not made at manufacturer's location, equipment shall be shipped subject to inspection and acceptance at destination.

Complies: |_| Yes |_| No

General:

Three (3) copies of all operator's manuals, parts lists, and warranty information shall be provided at time of delivery to each district receiving one or more units.

Complies: |_| Yes |_| No Note: The manuals, parts lists, and service or shop manuals listed above may be furnished on flash drive in lieu of paper.

Requirements Covering Items Detailed Above:

All equipment cataloged as standard or safety related shall be furnished and in place and shall be included in the purchase price of the unit. Any parts, tools, and/or accessories not specifically called for but required for proper operation shall be provided.

Complies: |_| Yes |_| No The component parts of the unit shall be of proper size and design to safely withstand maximum stresses imposed by a capacity load, and the manufacturer's rated loads for chains and bearings shall not be exceeded when the unit is loaded with such loads.

Complies: |_| Yes |_| No Standard tool kits (if required) shall be supplied.

Complies: |_| Yes |_| No |_| Not required

Full coverage warranty for a minimum 12 months shall be provided. Bidder shall attach copy of warranty with the bid. Since the continuous operation of this equipment is of the utmost importance and sometimes of an emergency nature, it is necessary that the successful bidder be in a position to render prompt parts and service.

The vendor shall notify the delivery location 24 hours prior to delivery. Delivery shall be made by truck to the locations shown on the order. The type of truck or trailer used for delivery shall be such that unloading can be accomplished by tractor-loader, skid steer or forklift. Trucks loaded beyond this capability will be rejected, and it will be the bidder's responsibility to arrange the unloading.

Complies: |_| Yes |_| No This equipment is to be delivered in first-class operating condition with acceptance subject to Department of Transportation inspection and approval.

Bid Response:

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

a) Specification Questionnaire

b) Descriptive Literature Picture is for visual reference only. Do not scale from picture.

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