180° Traffic Warning GateModel Number: TWG-1C 180
Exclusive low-profile bridge warning gates
180° Vertical lift traffic warning gate model TWG -1C 180 is manufactured by Bridge Roadway Products, 1785 West Armitage Court, Addison, IL 60101.
Key Features of Bridge Roadway Products Warning and Barrier Gates
- Steel Tenon Bolted joinery or cold roll formed operator arm assembly.
- World renowned and highly reliable SEW Eurodrive Motor, Gearbox and Brake.
- Smartlube® Timing Chain and Bearings reducing the maintenance requirements.
- Solid 2 ½ ” Drive shaft eliminating Linkage Connections
- Can accommodate up to 14 easily adjustable limit switches housed in a NEMA 1 enclosure.
- NEMA 4 Rated Electrical Enclosure.
- Available in both the Standard 90° and 180° Low Profile Configurations.
- Stainless Steel Structural Frame
- Stainless Steel Encapsulated Proximity Switches
- Extremely Low Maintenance
View Equipment Specifications »
Recommended Use – Designed to meet or exceed the current standards of the Manual on Uniform Traffic Control Devices (MUTCD) and the American Association of Highway Transportation Officials (AASHTO) for warning gates on movable bridges, reversible lanes of traffic, pedestrian walkways and bike paths or commercial applications where traffic control is required up to a width up to 40 feet for a single warning gate.
Overview – The Warning Gate Operator utilizes a heavy-duty industrial dual stage gear reducer and integrated motor drive gear box. The gear box is all self-contained one-piece construction which easily bolts into the operator framework. A solid 2 3/8”diameter drive shaft is attached through the gearbox to provide 16,000 in-lbs. of torque to open and close the warning gate arm assembly. Each end of the drive shaft extends through the side of the operator housing with mounting hubs to attach to the gate arm assembly. An Internal rotary cam switch box is mounted below the arm drive shaft and chain driven with a SmartLUBE® chain from the main drive gearbox. The operator is approximately 41 inches in width, 25 inches in depth, 55.5 inches in height, and weighs 700 lbs.
Operator Housing – The Warning Gate Operator housing consists of a welded heavy-duty tubular steel frame of 1 ½” square-tubing of ¼” wall thickness. The frame is welded to a 2 ½ x 3 ½ x ¼ angle iron base providing a robust structure for mounting of the operator to its foundation providing for 14 anchor bolt locations. The standard housing frame is stainless steel or optional post fabrication hot dipped galvinzed. The framework is enclosed with 12 Ga. (.1094”) powder coated cover skins and doors providing weatherproof protection for the internal components. Cover skins and doors are also available in optional stainless steel or hot dip galvanized finish. All skins and covers are attached to the framework using ¼” stainless steel six lobe tamper-resistant security machine screws, with stainless steel split lock washers. This hardware provides for weather resistance, security, and maintenance accessibility for authorized personnel when required. Lockable access doors allow easy access to the front and rear sides of the operator enclosure for internal electrical panel, controls, and a third side door for access to the manual override system. All doors have, door holders and self-lubricating lift-off hinges with latches sufficient to compress weatherproof gasket seals. The Drive shaft/hub openings are sealed as well.
Operator Housing Mounting – The system shall be mounted to a suitable foundation, as specified by the customer, using up to 14 ¾” diameter anchor bolts. The base of the unit will provide 1” diameter mounting holes for this purpose. A layout template will be provided.
Drive System – The main drive system is a dual stage gearbox 1/2 HP motor unit. It is a self-contained drive system which easily bolts into the main framework of the operator frame. The drive unit features a 1010:1 drive ratio between the motor and output shaft. The output of the gearbox is a hollow shaft style to accommodate a 2.375” dia. solid stainless steel drive shaft. The output speed of the unit is 1.7 RPM, which will fully open or fully close the warning gate at speeds that can be controlled and adjusted through the motor’s Variable Frequency Drive system (VFD). The VFD enables a sinusoidal action when in operation. The gearbox has an output torque of 16,000 in-lbs. and weighs 280 lbs. The gearbox shall be filled with synthetic oil for operational temperature ranges from -40 C to +40 C. Drive housing includes special surface protection paint for outdoor application.
Motor – The drive motor is ½ HP, 460 Volt, 3PH, 60 Hz, (as specified) or (as recommended by Bridge Roadway Products based upon gate size and application) inverter drive rated for VFD interface. The motor outside housing includes special corrosion protection for outside application with an IP66 rating. The motor/drive system includes a special internal braking system described below.
Internal Braking System – The drive motor includes its own electronic braking system with 44 in-lbs. of braking torque to the output shaft of the operator motor. A special hand brake release is included for manual operation of the drive system providing 44,400 of brake torque.
Manual Operation – The output of the fan shaft on the motor will have a socket connection, where when the system requires manual operation, the hand brake release is used to disengage the system brake and a battery powered drill unit with drive socket can be used to drive the motor/gearbox system manually.
Limits Cams – Standard configuration includes 8 number of cam switches mounted in a NEMA 1 rated enclosure capable of housing up to 14 limit cams can be provided as specifications require.
Warning Arm Gate Mounts – The Warning Gate Arm utilizes a heavy-duty all carbon 2” x 8” tubular steel cold roll formed with solid steel tenon offsets designed to achieve the specified height and location of the Warning Gate. Arm counter weights are steel plates or blocks bolted to the drive frame. Both frame and counter weights are provided with a powder coated finish or optional hot dip galvanized finish. The frame and counterweight system is affixed to the operator shaft hubs using armor coated bolts.
Warning Gate Arm – The arm is of all aluminum construction using rectangular tubing telescoping type sections. The final section of arm may be of fiberglass construction. The mounting end of the arm assembly utilizes a pivoting shear pin design to minimize damage to the gate and vehicle in the event of a collision. A minimum of three stainless steel truss cables, eyebolts, and associated hardware will be used to support the arm between the arm assembly and the steel drive frame. Front and rear arm surfaces shall be covered with alternating red and white high intensity reflective stripes.
Wiring, Control Wiring & Safety Switches – A manual disconnect switch is included to protect servicing personnel. Safety switches are installed on all of the access doors disabling the unit while being maintained our serviced. These safety switches can include an override function for the use during installation and testing if specified. Control components and terminal blocks are installed inside a NEMA 4 electrical enclosure inside the operator housing. Control wiring will be clearly labeled where appropriate and referenced on the wiring diagram included with the unit. Standard wiring is #14 AWG stranded unless otherwise specified.
Warning Lights – Warning lights per customer specifications (MUTCD/AASHTO regulations/specifications) shall be installed along the upper rail of the barrier arm assembly, wired, and controlled per customer specifications.
Warranty – Systems components manufactured and supplied by Bridge Roadway Products . shall have a 3 Year limited warranty against defects in materials and workmanship.
- Lift Points
- Harness Tie Offs
- Stainless Steel Cover Skins
- Hot Dipped Galvanized Cover Skins and Frame
Warning Gate Drive System
- Gear Ratio 101:1
- Number of Primary/Secondary Stages 2 / 3
- Output Speed 1.7 RPM
- Motor HP 1/2 HP
- Motor Voltage 460 VAC
- Frequency 60 HZ
- Brake Voltage 120 V
- Overhung load capacity 6,740 lbs.
- Output Torque 16,000 lb-in
- Torque Capacity 26,550 lb-in
- Nameplate Service Factor 1.65
- Insulation Class F
- Brake IP66 rating with 44 lb-in torque
- Corrosion Protection Rating IP66
- Dimensions 55.5” (140.97 CM) High 33” (83.82 CM) Wide and 18” (45.72 CM) Deep or to Specifications.
- Mounting Base Dimensions 39” (99.06 CM) Wide and 24.5” (62.23 CM) Deep or to Specifications.