The truck-mounted crane, also known as atruck-mounted crane transporter, has gained significant popularity in the special vehicle market in recent years due to its versatile and multi-purpose characteristics. These powerful machines are frequently utilized in a variety of settings such as garden construction, construction projects, factory warehouses, ports and docks, and many other places, thanks to their wide range of applications. However, like any mechanical equipment, after prolonged use, truck-mounted cranes are prone to develop certain problems. How much do you know about the common issues that may arise with truck-mounted cranes? Today, the author will share some of the common problems oftruck-mounted cranes that have been carefully summarized.
One of the key components of truck-mounted cranes is the steel wire rope used for lifting cargo. Unfortunately, steel wire ropes are often prone to various problems. During the usage process, steel wire ropes frequently come into contact with goods. At these collision points, issues such as single wire deformation, bending, and stress concentration of the steel wire ropes are likely to occur, which can ultimately lead to wire breakage. For those who are not highly professional in operating truck-mounted cranes, there are often instances where the steel wire rope collides with buildings during operation. Additionally, there are situations where the steel wire rope is often lacking in lubrication for an extended period, resulting in surface rusting. Or, it may be frequently exposed to high temperatures and get burned. All of these factors can significantly impact the service life of the steel wire rope. Therefore, when using truck-mounted cranes in daily life, everyone must pay close attention to these potential problems.
For example, imagine a truck-mounted crane at a construction site. As the crane is in operation, the steel wire rope repeatedly comes into contact with the construction materials being lifted. Over time, at the points of contact, the steel wire rope may start to show signs of deformation and stress concentration. If not addressed promptly, this can lead to a weakened rope and an increased risk of breakage. Moreover, if the operator is not careful and the steel wire rope collides with a nearby building, it can cause further damage to the rope. In another scenario, if the steel wire rope is not properly maintained and lubricated, rust can start to form on the surface, reducing its strength and durability. Similarly, if the rope is exposed to high temperatures, such as from welding or other heat sources at the construction site, it can be damaged and its service life shortened.
Another common problem area is the hook of the crane. This mainly refers to the potential for decoupling of the sling. During the lifting process of a truck-mounted crane, if the object being lifted is not properly bundled and the included angle between the slings exceeds 120 degrees, there is a significant risk. Or, if the hook is collided laterally during lifting and the bottom of the heavy object is rested on, the sling can be pulled out of the hook, leading to extremely dangerous accidents. Furthermore, the material of the hook is generally relatively brittle gray cast iron or cast steel. During the cargo lifting process, if there is a collision, the pulley attached to the hook is easily damaged. A damaged pulley can cause damage to the steel wire rope over time. In the long run, due to repeated use and potential collisions, the hook and pulley are prone to accidents caused by breakage. Hence, everyone must be extremely cautious when using the hook in daily life.
For instance, suppose a truck-mounted crane is lifting a large piece of machinery at a factory. If the slings are not properly arranged and the included angle exceeds the safe limit, there is a high chance of the sling slipping off the hook. This can not only damage the machinery being lifted but also pose a serious threat to the safety of workers nearby. Moreover, if the hook collides with an obstacle during the lifting process, it can damage the pulley and affect the smooth operation of the lifting mechanism. In the long term, if these issues are not addressed, the hook and pulley may break, resulting in a catastrophic failure.
The brake of the truck-mounted crane is also a component that is prone to problems. For example, if the main spring of the truck-mounted crane brake is damaged or adjusted too loosely, the braking torque will be insufficient. This can lead to a situation where the brake is unable to hold the heavy load effectively. Additionally, if the brake shoe is excessively worn and exposes the top of the cap, there will be insufficient friction, and the brake will not be able to stop the vehicle when needed. The locking nut of the brake lever being loose can cause the lever to jump, affecting the braking performance. Also, if each joint of the lever system is stuck or there are other factors that interfere with the proper functioning of the brake, it can pose a serious safety hazard. Abnormal opening gaps of the brake shoe can also lead to problems with braking. All of these situations can result in accidents due to the inability to stop the vehicle promptly.
For example, consider a truck-mounted crane transporting heavy loads on a busy construction site. If the brake fails due to a damaged spring or excessive wear of the brake shoe, the vehicle may not be able to stop in time, potentially colliding with other equipment or workers. Loose locking nuts or stuck lever joints can also cause the brake to malfunction, increasing the risk of accidents. In a worst-case scenario, if the truck-mounted crane is unable to stop while descending a slope, it can lead to a disastrous outcome.
In conclusion, being aware of these common problems with truck-mounted cranes is crucial for ensuring safe and efficient operation. Regular maintenance and inspection of the steel wire ropes, hooks, and brakes can help detect potential issues early and prevent accidents. Operators should also receive proper training to handle these machines safely and effectively. By paying attention to these details and taking appropriate measures, we can minimize the risks associated with using truck-mounted cranes and ensure smooth operations in various industries.
