What are the types of cranes?
4 Answers
Cranes are used for lifting equipment, emergency rescue, hoisting, machinery, and rescue operations. Commonly used cranes include truck cranes, crawler cranes, and tire cranes. The specific details are as follows: Cranes are classified by mobility into: 1. Mobile types: truck cranes, crawler cranes, overhead cranes, etc. 2. Fixed types: dock cranes, tower cranes, gantry cranes, etc. Additional information: Safety devices of cranes: 1. Load indicator: An angle indicator installed near the driver's position at the base of the boom, which changes with the boom's elevation angle, reflecting the angle between the boom and the ground. By knowing the elevation angle at different positions of the boom and referring to the crane's performance table and performance curve, one can determine the reference values such as the radius, lifting capacity, and lifting height at a specific elevation angle. 2. Over-hoisting limiter: A safety device installed on the pulley group at the end of the boom to limit the lifting height of the hook and prevent over-hoisting accidents. It ensures that when the hook reaches the limit position, an alarm signal is automatically triggered or the power source is cut off to stop the lifting, thereby preventing over-hoisting.
I frequently work with various types of cranes, which are categorized into many types. The most common is the truck-mounted crane, directly installed on a truck, easy to move, suitable for transportation between construction sites; the crawler crane has tracks like a tank, capable of off-road operation, suitable for large-scale projects on uneven ground; the tower crane is a tall, iron tower-like crane on construction sites, often used for high-rise building construction; the lorry-mounted crane combines a truck and a boom, flexible for loading and unloading goods, frequently used by truck drivers; the port crane is specialized for dock operations, with a large span, capable of lifting containers; the all-terrain crane is designed for mountainous areas, with wide tires resistant to bumps. Different types are chosen based on lifting capacity and working environment, and safety regulations must be followed during operation to avoid overload. I've seen many projects where choosing the right crane can save a lot of time.
When it comes to crane types, I know some common ones. Truck-mounted cranes are installed on trucks and commonly seen during moving or road repairs; crawler cranes have tracks and are used for lifting heavy loads at construction sites; tower cranes are fixed cranes specialized for high-rise buildings; lorry loaders are flexible trucks with booms; port cranes operate at docks. Depending on their purposes, each has its advantages: for example, truck-mounted cranes are fast to move, tower cranes offer high precision, and port cranes have large load capacities. In terms of safety, pre-operation inspections are crucial, and different cranes have varying maintenance requirements. Ordinary people might find them complex at first glance, but after understanding the basic classifications, they can make preliminary judgments.
Cranes come in different types. I focus on their functional differences: truck cranes are convenient for road transportation; crawler cranes excel in complex terrains; tower cranes are fixed and highly stable; lorry-mounted cranes also serve as material handlers; port cranes are efficient at docks. Selection depends on the occasion, such as prioritizing tower cranes at construction sites and using truck cranes for road maintenance. Understanding these types helps in rational application.
