SOURCE: Industry Visions

Industry Visions

July 11, 2011 06:00 ET

Industrial Hoist Load Bounce: A Dangerous Dance Plant Safety Managers Must Stop, WVSN Reports

MANHEIM, PA--(Marketwire - Jul 11, 2011) - Hoist load bounce is a phenomenon that has long been considered among the top dangers of the industrial lifting process, according to Industry Visions news contributors. Smooth level lifts have always been affected by the forces of gravity that compound from jerky starts or abrupt stops no matter the skill level of the lift operator, or reliability of the hoist product. Load bounce during operation can also cause uncontrollable bounce oscillations, creating sways that can spill a load causing material damage or worse -- injury to plant workers.

Plant Safety Managers are taking stock of new technology from Harrington Hoists, Inc. that reduces load bounce. Managers describe the benefits of VFD (variable frequency drive) technology as having dominance over many dynamics in hoist lifting applications. VFD is now a standard feature on all Harrington two-speed NER three phase electric chain hoists.

Bret Lussow, Business Development Sales Manager for Harrington, demonstrated the new VFD technology on camera for WVSN Reports. "Harrington has changed the way a two-speed industrial hoist goes to market. Our competitors' hoist has two speeds: fast and slow, with no adjustment. As soon as the contactors are engaged, the torque from the motor causes the hoist to jerk, creating instant load bounce. You can imagine how a load is going to react, especially if it's at the end of a twenty foot chain. With Harrington's new VFD technology, speed can be adjusted at a 2 to 1 ratio with ramp-up time of up to 6 seconds; this makes for smooth, safe, controlled lifts.

"With the VFD technology, expensive replacement of contactors becomes a thing of the past, saving huge maintenance cost and extending the life of the hoist. We at Harrington are an innovative hoist company, and that's why the VFD comes standard on our two-speed NER hoists. Every lifting application can have a customized speed with Harrington's patented VFD hoist technology. With this feature, load bounce ends and the workplace just got a whole lot safer."

Harrington Hoists, Inc. is one of America's oldest manufacturing companies, dating back to the 1800s, and has become the world leader in hoist-lifting solutions.

WVSN Reports is an industrial news program high-lighting the endeavors of American Industry the news program is a feature of Industry Visions.

Contact Information

  • Contact:
    Allyn Mark
    WVSN Industry Visions President