Galco
Galco is an amazing source for many things drawbridge related. I have used them for resolvers, encoders and VFD keypads just to name a few things. They also provide repair services for many control cards. Check them out for yourself.
In keeping with the topic of capacitor reforming for VFD’s, this link is for those using drives from Control Techniques, a Nidec Brand Company. This link will take you to a login page where you must register (free) in order to access the publications and guides. For other manufacturer’s, feel free to contact me or search for your manufacturer and capacitor reforming.
Established in 1895 as Kahlenberg Brothers Company, Kahlenberg Industries, Inc. is a leading manufacturer of sound signaling products, primarily consisting of pneumatic air and electric horns for marine, industrial, and mass notification use. If you need a bridge signal horn that means business, look no further than Kahlenberg.
Allen Bradley PLC training resources for technicians, electricians, operators and engineers.
B&B Roadway is the market leader in the managed lane industry. B&B Roadway provides warning gates, resistance barriers and navigational lighting solutions for moveable bridges, reversible lanes, and roadway closure systems.
American Bridge is a legendary construction company whose projects include a significant proportion of the world’s large bridges, marine installations, and other complex structures. Its history, project experience, safety leadership, reputation for integrity and competence, commitment to in-house development of human talent, equipment fleet, and above all, its advanced engineering technology, make the company unique in the entire world.
Want a training aid in the concept of drawbridge function? Build this drawbridge from PASCO Structures, add a stepper motor and gears, and write code to raise and lower it. This bridge kit also includes a Wireless Load Cell/Accelerometer to measure forces within the bridge while it moves.
Bridgehunter.com is a database of historic or notable bridges in the United States, past and present. Currently under rehab after the untimely death of the site’s creator. Worth keeping an eye on.
Gai-Tronics, a Hubbell Company, provides industrial communication and paging equipment suitable for any environment. They sell intercom, mass notification systems, telephones and even IP devices.
TIC is an industrial construction company well suited to perform any major work on drawbridge installations. I have worked with them numerous times and they are consistent in their thorough planning and quality of work.
Power Quality and Drives – Power Quality and Drives is a resource for the purchase of Variable Frequency Drives, Electric Motor Starters, Contactors, Motor Overload Relays, Duplex Pump Controls, Surge Suppressors and Pressure Transducers. The site also provides a wealth of information and includes an engineering bookstore.
Magnetek – Magnetek is a company that among other things produces one of the best thruster brakes in the industry. Check them out!