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General Description A. Design/Manufacturer 1.1 The Dumpster-Veyor is designed to provide the operator a means to evenly distribute material into a roll-off container being deposited from a discharge point or conveyor. The system has a rated capacity of 20 tons, with an optional capacity of 30 tons. 1.2 The components of the Dumpster-Veyor include four (4) runs of runway track with anchors, two (2) drive tracks, two (2 ) idler articulating carriers, one (1) drive articulating carrier, one (1) positive control dual directional closed loop chain drive system with controls and one (1) return sheave. 1.3
The Dumpster-Veyor TM shall be manufactured by:
Components A. Runway and Drive Tracks 2.1 The runway track shall be manufactured using carbon steel or 316 / 304 stainless steel and be a built up fabricated section, providing a track system on which the drive and idler carts operate. Tracks shall be positioned under a discharge point so that the track extends in either direction from the discharge point as shown on the drawings. Track length shall be as indicated on the drawings spaced at approximately 40". 2.2 Track joints are spliced with pin connectors 1/4" diameter. Ends of adjoining tracks are drilled to receive three (3) 3/8" diameter pins. Pins are carbon steel or stainless steel to match the type of track being installed. Track ends are shop fabricated to permit smooth transition from track section to track section during carrier travel. No field welding of track joints is required. 2.3 The chain drive track shall be manufactured using carbon steel or 316 / 304 stainless steel base plate and a UHMW guide channel mounted to the base plate. The base plate is drilled at regular intervals for mounting to a flat concrete surface using an expandable anchoring system or the epoxy anchoring system. Two tracks running from the drive winch to the idler sheave are required spaced at approximately 9" apart. The drive chain rides in the guide channel. 2.4 End stops shall be provided at each end of the four tracks. End stops and track material shall be the same. End stops are shop welded in place at extreme ends of track. B. Idler Carriers 2.5 Two (2) low profile, heavy duty steel idler carriers, each having a capacity of 10 tons and a nominal plan size of 2'-9" by 4'-6", shall be provided for the container handling system. Each idler shall be assembled to prevent skewing and racking and to accurately accept the articulating wheel assemblies. 2.6 The carriers shall be drilled to ensure articulating axle alignment. The axles shall be held in place by retainer plates which are easily removable to allow component inspection. Dual container wheel stops shall be provided on carrier surface to prevent wheel overload and container roll-off when traveling. Stops shall be factory welded and located to clear any obstruction on the underside of the container. 2.7 Each carrier shall be equipped with eight (8) double flanged carbon steel or 316 / 304 stainless steel wheels assembled into articulating trolley assemblies. Articulating trolley assemblies are designed to maintain equal wheel loading at all times during carrier travel. Wheels shall interface with the runway track to allow easy tracking and eliminate binding during travel. C. Drive Carrier 2.8 One (1) low profile, heavy duty steel drive carrier having a capacity of 20 tons and a nominal plan size or 11'-2" by 2'-9" shall be provided for the container handling system. The unit shall be assembled to prevent skewing and racking and to accurately accept the articulating wheel assemblies. 2.9 The carriers shall be drilled to ensure articulating axle alignment. The axles shall be held in place by retainer plates which are easily removable to allow component inspection. Dual wheel stops shall be provided to prevent wheel overload and container roll-off when traveling. Stops shall be factory welded and located to clear any obstructions on the underside of the container. 2.10 The center portion of the drive carrier shall be designed and constructed to allow double articulation, allowing the drive carrier to follow minor irregularities in the track elevation. Drive carrier shall be factory aligned. Center portion of the drive carrier shall be equipped with steel welded lugs for connection of drive chain and swiveling clevis connectors. 2.11 The drive carrier shall be equipped with sixteen (16) double flanged carbon steel or 316 / 304 stainless steel wheels assembled into articulating trolley assemblies. Articulating trolley assemblies are designed to maintain equal wheel loading at all times during carrier travel. Wheels shall interface with the runway track to allow easy tracking and eliminate binding during travel. D. Articulating Trolley Assemblies 2.12 Each articulating trolley assembly shall consist of a carbon steel or 316 / 304 stainless steel top pivoting shaft, two (2) carbon steel or 316 / 304 stainless steel heavy duty side plates, two (2) carbon steel or stainless steel double flanged wheels with stainless steel sealed roller bearings and two (2) carbon steel or stainless steel wheel axles. The top pivoting shaft shall secure the assembly in place on the carrier frame and allow articulating motion for equal wheel loading. 2.13 Wheels shall be double flanged, 5" tread diameter for operation on 1-1/2" bar track with sealed roller bearings. Wheels to be manufactured from carbon steel or 316 / 304 stainless steel. Wheels are to be mounted on the free floating axles and mounted in the heavy duty side plates. All components are easily removable for inspection and replacement if required. E. Closed Loop Winch 2.14 A single speed, base mounted, positive control, dual directional electric motor driven carrier drive shall be furnished with the drive carrier. The puller shall operate at a speed to move the container at approximately 18 FPM unless otherwise indicated. 2.15 The drive base frame shall be a fabricated steel weldment designed for easy access to motor, gearbox and drive wheel. 2.16 The gearbox shall be cycloidal type design providing high reduction with minimal space requirements. Cycloidal drive shall be Sumitomo, operating in oil bath lubrication. All bearing shall be rated for 5000 hours, L-10 bearing life. 2.17 A zinc plated steel chain seated in a type 316 stainless steel pocket wheel mounted to the output shaft on the cycloidal gearbox shall connect to the idler sheave also having a sheave 316 stainless steel pocket wheel. The drive sheave and idler sheave shall be mounted in the horizontal plane for a low profile configuration. Drive chain shall run in UHMW guide channel described previously in this specification. 2.18 The electric motor shall be TENV 30 min. duty rating, 1-1/2 HP, single speed with high starting torque characteristics. Motor shall be C-face mounted design with minimum class B insulation. Motor shall operate on 460 volts 3 phase 60 hertz control voltage to be reduced to 115 volt single phase. The motor shall be provided with a 100% torque rated disc type brake, electrically opened and mechanically closed for fail-safe operation. The motor also shall include an overload torque limiter to prevent overloading system components. The torque limiter shall electrically interrupt the motor directional circuit in the event of an overload condition. 2.19 Two magnetically operated travel limit switches shall be provided to stop carrier movement at extreme ends of the track. Steel lugs are secured to the drive chain and positioned on the chain to stop the container at the ends of the drive track. The lugs are field adjustable and can be relocated at a later date if required. The steel lug is detected by the magnetically operated normally closed switch, which opens the directional circuit on the drive winch. F. Return Idler Sheave 2.20
The return idler sheave shall be mounted horizontally inside a heavy duty
steel weldment designed for low profile and able to withstand truck traffic.
Idler sheave is a stainless steel pocket wheel operating on sealed roller
bearings. The heavy duty steel housing includes holes for mounting the
unit to a concrete floor or pad. A. General 3.1 The container handling system manufacturer shall design, furnish and shop test a pedestal mounted control station for control of system movement. Controls shall include a 3 phase power circuit controlled by a single phase control circuit with step down transformer. The control system shall be designed to handle the expected duty cycle of the container handling system. Power supply is 460 volts 3 phase 60 hertz, and the control circuit will be 120 volts 1 phase 60 hertz. 3.2 Control schematic shall include a circuit designed to set the motor brake for stopping purposes then open the motor brake for extended periods of time using a programmable controller. Other features to be included are travel limit switches, torque limiter, warning horn, power on light and on-off switch. 3.3 All controls are to be located in a NEMA 4X enclosure or NEMA 7 enclosure depending on site conditions. Heaters shall be included in control enclosures. Push buttons for control of the system movement shall be mounted in the enclosure door with indicating lights for "power on", "power off". Enclosure shall be pedestal mounted or wall mounted. The enclosure shall be located as indicated on the contract drawings. 3.4 The warning horn shall sound for 15 seconds prior to the system moving and shall be activated by the forward and reverse buttons. The warning light shall flash during horn signal and stay flashing during system movement. Light and horn shall be mounted on a post secured to the drive winch base. The light shall be easily visible from any vantage point in the room. Painting A. General 4.1 Stainless steel surfaces shall not be painted including stainless steel runway tracks. Carbon steel runway tracks shall be primer and safety yellow excluding tread surface. Tread surfaces will be taped before painting. All other items will be primer and safety yellow. Standard paint is epoxy paint system. 4.2 Equipment shall be touch painted in the field after installation. All marks and abrasions shall be primed if required and finish coated with epoxy safety yellow. Installation A.
General 5.2 The epoxy mounting system incorporates a leveling nut under track to set elevation of track along the length. After installation, grout shall be installed under track along the entire length. Drive winch and idler sheave shall be installed the same way if the epoxy system is used. 5.3 The concrete floor or pad shall have a constant slope in one direction not exceeding 1/4" per foot for runoff purposes. Trench drains running perpendicular to the tracks at intervals dictated by the engineer is the preferred method for drainage in a new facility. 5.4 Track, guide channel, drive and idler shall be installed at the same elevation (+-) 1/4". Care should be taken to ensure alignment of guide track to drive chain during installation. Testing & Startup A. General 6.1 The container handling system shall be tested for proper operation prior to being put into service. All controls, lights, horns, limit switches and stops shall be tested in a no-load situation. 6.2 A container provided by others can be used to perform a partial-load test. The container, delivery of the container and removal of the container is to be provided by the owner. An operational and partial load test will be performed with an empty container. The owner is responsible for obtaining a loaded container to perform a full-load test. 6.3 Tests shall include operating the equipment the full length of the tracks, checking travel limit switches and carrier operation.
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