BOB-LIFT Reveals The Key Functions of Crane Limiters for You

Under the steel boom of the crane, there are some unassuming "guardians". Although they are not conspicuous, they are the lifelines that ensure the safety of equipment and prevent major accidents. Today, BOB-LIFT will take you on a deep dive into the crucial part - the limiter, and show you how we integrate this safety concept into every product.

I. What is a limiter? Why is it a "safety bottom line"?

In simple terms, a limiter is an automatic safety switch on a crane. When the moving parts of the crane (such as the hook, trolley or bridge) reach their preset travel limits, the limiter will automatically cut off the power supply and force them to stop moving, thereby preventing collisions, overlimits or even more dangerous accidents.

You can understand it as the "seat belts" and "airbags" in a car - they are not conspicuous in normal times, but at critical moments, they are the last line of defense and the most reliable one.

Ii. Protection Everywhere: Detailed Explanation of Common Types of Limiters

A modern crane is usually equipped with multiple limit protections:

Rise height limiter: This is one of the most crucial limiters. It can prevent the hook from "hitting the top" (i.e., hitting the highest point), avoiding damage to the lifting mechanism and even serious accidents such as wire rope breakage.

Travel limiter: It controls the movement of the crane's trolley or large car within the track range to ensure that it does not "derail" or collide with equipment or buildings at the end of the track.

Load limiter (not purely a limit, but a safety protection device) : It monitors the lifted weight in real time. When the load exceeds the rated value, it will issue an alarm and cut off the dangerous action, eliminating the risk of overloading from the source.

Iii. BOB-LIFT's Safety Philosophy: It's not just about meeting standards, but about surpassing

At BOB-LIFT, we firmly believe that safety should never be compromised in the slightest. Therefore, on our cranes, the limit system you see is far more than just "conforming to standards".

Redundant design, dual protection: For critical safety points (such as ascending height), we often adopt a dual limit design. The first one is the regular working limit, and the second one is the emergency safety limit. It's like having "double insurance", which greatly enhances the reliability of the system. Even if one fails unexpectedly, the other can still firmly hold the bottom line of safety.

Core components, quality choice: We are well aware that safety depends on the stability of each component. BOB-LIFT selects high-precision and long-life limit switches from well-known domestic and foreign brands to ensure that they can still be accurately triggered and respond without error in harsh industrial environments such as dampness, dust and vibration.

Intelligent linkage, preventing problems before they occur: In our intelligent crane series, the limiter is no longer an isolated switch. It is deeply integrated with the intelligent control system, not only enabling forced stopping but also providing early warnings, recording operation data, helping managers analyze the equipment's operating status, achieving predictive maintenance, and nipping potential safety hazards in the bud.

The value of a crane lies not only in the weight of goods it can lift, but also in whether it can operate safely and reliably throughout its entire life cycle. Choosing BOB-LIFT means choosing a solemn commitment to safety. We are willing to devote our efforts in places you can't see, using safety designs that exceed industry standards and solid materials to build an impregnable safety barrier for you.