HOOK LIFT HOIST MECHANISM & HYDRAULICS

HOOK LIFT HOIST MECHANISM & HYDRAULICS

The intent of this specification is to describe a Hook Lift Hoist Mechanism (Roll Off unit) that Fleet Services will install on a single axle 34,000lb trucks. These Hook Lift Mechanisms will be delivered to Fleet Services and up- fitted further by MDOT Fleet Services to our standards and specifications. The following requirements and criteria for these units shall be met completely. These Hook Lift Mechanisms must be manufactured and welded for heavy duty application and continuous year round use. There will be three (3) complete roll off units with rack (contractor type) bodies mounted directly to the skid (minus body subframe) with hydraulic dump through lift gates and three (3) additional sub-frames (skids).

“The award will be made on a best value basis to the vendor that either meets or most closely meets the specifications, while taking price and delivery into consideration.”

Please complete all checklists. An X will have the same meaning as standard or specified equipment. Make note of all exceptions and identify as not available or dealer installed.

The following abbreviations must be used:

X Standard or as specified

N/A Not Available

DI Dealer Installed

AE Approved equal process

1. LIFTING CAPACITY

_____ 1.1 Stellar Shuttle Model # 96-10-24 (or approved equal).

_____ 1.2 Hook lift and dump capacity rated at 24,000 lbs minimum.

_____ 1.3 Dump angle shall be a minimum of 53°.

_____ 1.4 Hook lift must be capable of handling skid mounted containers and body lengths of up to12.5 feet.

_____ 1.5 Hook to rear roller shall be115”.

_____ 1.6 Rear flange rollers shall be 4” diameter x 2.69 wide.

2. HOIST MAINFRAME

_____ 2.1 Mainframe of hoist shall be Z rail construction.

_____ 2.2 Mainframe shall be constructed of ¼” grade 50 steel.

_____ 2.3 Hoist Z frame rails shall include a minimum of four per side 11 ¾”x 2¾”x 12” Nylatron wear pads at the front of the Z for body/container support.

_____ 3.4 Shall include an audible hoist alarm.

3. HOOK LIFT SYSTEM

_____ 3.1 Dump/load cylinders must be double acting, dual lift sized for specified capacity and a reserve with counter balance valves.

_____ 3.2 Dump/load cylinders must be 5.5” bore with 2.5” diameter rod and a 40” stroke with counter balance valves minimum.

_____ 3.3 Jib shall have a double acting single cylinder with counter balance valve and 4” bore X 14.5” stroke.

_____ 3.4 Jib must be capable of hydraulically sliding the body/container horizontally on the chassis without lifting to adjust weight distribution while remaining in the body locks.

_____ 3.5 System must have a hydraulic lockout valve to prevent jib operation while in dump mode.

_____ 3.6 Jib hook must be capable of reaching rearward to A-frame eye by double articulating hinge points in the hoist mechanism.

_____ 3.7 All lift sections must lock into a common rigid full length frame to support the body/container when dumping.

_____ 3.8 Locking must be accomplished by positive mechanical latches to lock the mast. Gravity or hydraulic locks are unacceptable.

_____ 3.9 Must be equipped with integral slide through lock down plates to secure the body to hook lift in dump and /or transport condition.

_____ 3.10 Body locks must accommodate for different length bodies and allow for weight distribution changes when in transport or dump cycle, while remaining in body locks.

_____ 3.11 Body/container must be supported by one pair of outside flanged rollers at the rear of the hoist and provide adequate clearance to dismount a body with a dump thru tailgate.

4 HOOK ASSEMBLY

_____ 4.1 Hook height 54” from bottom of long sills to bottom of hook.

_____ 4.2 Lowest hook height shall be a minimum of 44”.

_____ 4.3 Jib hook designed to secure body to hoist without need of a safety latch.

_____ 4.4 Jib shall be of rigid design constructed of 9”x 9” x ½” wall square tube (or approved equal).

_____ 4.5 Body/container A-frame must be constructed to allow hook lift to engage 60° off center (minimum).

5 RACK BODY(CONTRACTOR STYLE )

5.1 To be mounted directly to A-frame (skid) by body manufacturer.

5.2 Body to be 12 feet long and 8 feet wide.

5.3 Shall include 14" high removable drop down continuous steel sides.

5.4 Each body will come complete with removable steel racks.

5.5 Heavy duty design and construction for extreme service.

5.6 Floor shall be 3/16" smooth plate over 2" minimum sealed tongue and groove wood.

5.7 7" structural steel channel side sills and end rails welded together and shall be one piece full length.

5.8 4” structural steel channel cross members on 12" center.

5.9 Double cross members at front and rear.

5.10 Every cross member gusseted to A-frame (skid) for support.

5.11 Four (4) sided rectangular stake pockets of steel construction.

5.12 All bodies must be equipped with full weight bearing load rollers, 1 per side of body.

5.13 Rollers must be a minimum of 6” in width, and 6” in Diameter.

5.14 Rollers must be cast iron, cast steel, or cast aluminum, rubber or poly rollers are not acceptable.

5.15 All rollers must have grease fittings.

5.16 Rollers must be installed on each body in such a way as to support up to a 50° degree dumping angle.

5.17 Rollers must be welded, bolted, and reinforced to accept the load bearing of a fully loaded container.

6 BULKHEAD

6.1 Heavy duty, full width, 60" high (minimum) bulkhead, gusseted to side sills.

6.2 Bulkhead shall be heavy duty screen design capable of supporting an extended load.

6.3 Bulkhead shall be of proper height to protect cab roof from damage by extended loads.

7 LIGHTS

7.1 All lights including corner lights shall be recessed LED’s.

7.2 All wiring shall be done in a professional manner and must meet MDOT Fleet Services standards.

7.3 All wiring to be run in suitable weather resistant loom or conduit and securely attached.

8 CARGO WINCH

8.1 There shall be a sliding winch track the full length of the body on the right (or ditch) side.

8. 2 Four (4) cargo winches shall be provided in the track.

8.3 Cargo winches shall have minimum of 25' x 3" wide cargo strap with a minimum of 20,000 lbs. breaking strength.

8.4 Each strap shall be provided with four (4) reinforced rubber corner protectors and a grab hook assembly.

8.5 There shall be provided a minimum of two (2) 28" tapered tip winch bars. 9 DUMP ASSEMBLY

9.1 Body assembly shall be mounted to the skid directly, (without body subframe by body manufacturer).

9.2 Dump hoist capacity 20 ton.

10 SUBFRAME (“A” FRAME / SKID)

10.1 Three (3) extra subframes will be included.

11 HYDRAULIC LIFT GATE

11.1 1,600 lb. capacity (Tommy Gate G2-92-1650-LD-34 or approved equal).

11.2 Dump thru tailgate without legs.

11.3 Lift gate controls at rear of truck (ditch side).

11.4 Lift gate must be designed so that it does not interfere with the vehicles capability to tow short tongue 20 ton trailers with a pintle type hitch.

vehicles capability to tow short tongue trailers and/or compressors on a pintle type hitch.

11.5 Electric over hydraulic operation.

11.6 Ramp 83”x 34” with a 6” taper.

11.7150 amp circuit breaker and master disconnect switch.

11.8 Lift gate shall be designed to accommodate the roll-off body.

11.9 Lift gate will be installed by MDOT Fleet Services personnel.

12 PAINT

12.1 All metal shall be free of rust and mill scale and prepared (sandblasted) for primer and finish paint coat.

12.2 A two (2) part epoxy primer shall be applied to prepared metal surfaces to the minimum thickness of 3-5 mils dry.

12.3 Paint shall be applied to a thickness of 5-7 mils dry. Use only Imron 3.5 HG Cat Highway Yellow (paint code # 42-3133).

12.4 All paint and primer shall be lead free.

13 WARRANTY

13.1 One year parts and labor, or standard manufactures warranty shall apply whichever is greater. Warranty shall begin on the date unit is actually put into service by MDOT Fleet

Services.

GENERAL

14.1

Two (2) complete parts manuals per unit shall be supplied (CD’s are ok).

14.2 Two (2) complete service manuals per unit shall be supplied (CD’s are ok).

14.3 Two (2) operator’s manuals per unit shall be supplied (CD’s are ok).

14.4 Bidders shall supply a specification sheet with their bid proposals listing exactly what they are bidding (not a reference to a web site).

14.5 These specifications are minimum and bids will be evaluated based on price warranty, manufacturers performance data, delivery schedule (delivery schedule may influence award); parts availability and other items deemed appropriate.

14.6 Vendor to provide training at a later date, but within eight (8) weeks of delivery (unless other arrangements are necessary).

14.7 Maine DOT Fleet Services reserves the right to pre-inspect the equipment before delivery.

All bid pricing will include shipping and delivery to:

Maine DOT Fleet Service, 105 Capitol St. Augusta Me. 04330.

EXCEPTIONS and QUESTIONS:

All exceptions must be asked during the bid period by submitting your requests and / or questions through the Question and Answer link on the Solicitation Details View page. Your answer will appear there as well. It is the vendor’s responsibility to log in to view all questions and answers posted there. Questions and answers obtained any other way will not be valid for this RFQ.

ESB-7/30/12

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