Measures have been developed to safeguard hoisting equipment from overloading, as it may threaten the crane operator’s lives and those working in the facilities. To minimize such calamities, they improve structural designs in terms of mechanical resistance. Load limiters which are devices fitted to avoid hoist exceeding its designed SWL, are used to prevent this from happening.
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Other factors that harm cranes include improper hoisting device handling and lifting loads above the crane’s usual capacity. These factors result in the rapid wear-and-tear and fatigue of crane components such as sheaves, hook block, or spreader gearbox, dead-end anchor point, service break, and so on.
We employ Load Limiters to prevent this from happening. These devices are fitted at the fixed rope end of a wire rope-with or without a load cell based on design, or in the control panel, prevent loads from being raised beyond their design capacity. It works by halting hoisting operations when the crane’s maximum working capacity is reached. These are necessary to prevent accidents and breakdowns caused by overloads on cranes, hoists, and winches, where the tension in the wire ropes must be continuously monitored. If the crane’s safe working load limit is exceeded, a load limiter either stops the lifting process or sounds an alarm or both will occur based on the design..
Load Limiters
All cranes are fitted with load limiters. This protects the crane from damage and prevents it from dropping its weight by ensuring that the hoist or crane does not lift more than it was built for. The normal standard set-point for each load limiter is 110 percent of the SWL which can be increased or decreased based on client and site requirements. The maximum load seen during a load limit event will be higher than the prescribed set-point when load limiters are tripped.
Another dynamic load factor is when the load is lifted and then rapidly stopped, resulting in bouncing, a sudden jerk or swing, static and dynamic friction, and corrosion binding. Higher instantaneous loadings may result because of these factors. This is especially problematic when transferring the weight to the crane for the first time.
Crane load limiters are classified as mechanical, electrical, or load limiter-chain hoists. They can all be fitted into your existing cranes requiring no modifications, making them simple to install and cost-effective. All you’ll need is experts like Technomax, who have done this for hundreds of cranes, to make this happen.
Mechanical Load Limiters
The mechanical load limiter is a safe and economical technology that requires very little maintenance because of its construction. We connect mechanical load limiters to the crane through the hoist. These are employed in situations where spring may collapse,clutch may slip to prevent further lifting.
Electrical Load Limiters
Electronic load limiters have parameters that can be changed. These are similar to mechanical load limiters in that they function in the same way. When the hoist is activated by overload, they continuously measure how much power the electric motors draw.
In order to measure the tension in wire ropes, they employ digital sensors. They’re ideal for applications that require retrospective installation onto wire ropes after the load has been measured for the remaining life.
Conclusion
Load Limiters are a vital part of any crane system. They can extend the life of your equipment and provide a safer working environment at your facility. If you’re looking for the most cost-effective and efficient load limiters for your cranes, give Technomax a call right away. We’ll take care of everything for you and guarantee that your cranes operate safely, supplying all the necessary equipment and staff.
