yA crane is an item of lifting equipment that is a heavy-duty machine. Making use of several mechanisms to move objects from one place to another. By raising and lowering and further moving horizontally.
Cranes were first invented in Greece and are designed to lift the weight of loads that humans are unable to lift through a system of mechanical maneuvers.
Cranes have been designed for a variety of industries, depending on the lifting needs of the particular industries, and are often designed to be able to work in areas that would be unsafe for humans to lift objects on their own.
How Does a Crane Work?
Cranes are typically equipped with several essential mechanisms and parts, such as jibs, booms, outriggers, rotex gears, counterweights, hooks, and reinforced-steel cable.
There are three methods by which cranes can lift material. The first is with a lever that is balanced to a position on a crane which allows the lever to move up and down and lift heavy loads.
The balance of a crane is essential in all movements where the perfect balance is achieved where the movement measurement on the base is equal to zero. The size of the load must then be lighter than the force it would take to tilt the crane.
The second method is with an arm, where pulleys are used to lift and lower materials.
The third is by way of a hydraulic cylinder.
The horizontal movement of a crane can also take place in several ways. Either through where the device is mounted on a rotation device to swivel and rotate the machine from side to side, or in a rolling action where the load can be rolled back and forth to move the material.
There are two fundamental physics principles that all cranes must follow to perform the lifting of material. Being that the weight of the load must not be more than the weight of the crane itself, and there must be no sudden movement above the supporter of the crane.
Cranes are mobilised and able to lift heavier loads because of the counterweight design and are typically powered by internal combustion engines, electric motors, or hydraulic power.
Types of Cranes
Cleveland Cranes has a wide variety of cranes for hire to suit your particular requirements. Each crane is a specialist piece of lifting equipment. That operates in a very specific way, allowing the crane to be specifically useful in the particular industry that it is designed for, whether big or small.
Tower cranes
Tower cranes are typically fixed to the floor and are seen commonly in construction. Providing the perfect dimension of height and lift. Two arms protrude from the central tower where one is used for the lifting of the materials. The other is used as a counterweight for the crane. Operated by a person seated at the top of the crane, or can be moved through a remote control. Without needing a person to be present on the crane to move the device around.
Mobile cranes
Mobile cranes are those that can be moved and attached to vehicles. These cranes are typically seen in the railway or shipping freight industries. Where objects not only need to be lifted but also moved from one location to another beyond what the arm of the cranes able to reach, such as across water. These cranes typically involve the use of ropes or pulleys and are powered hydraulically. They can also be affixed to the vehicle for further support.
Workshop cranes
Workshop cranes can include both the heavier duty as well as the smaller cranes. Used for daily activities of loading and lifting. They are useful for machinery and tool loading and can be seen in vehicle maintenance as well as in manufacturing industries.
Telescope cranes
Telescope cranes are designed with two tubular arms. Which can be adjusted so that the height of the crane can be adjusted. This type of crane is typically used in smaller areas where heavy lifting needs to take place.
Static cranes
Static cranes are those which are fixed or stationary to a particular point. As opposed to mobile cranes which can move around.
Bridge cranes
Bridge cranes are used for very heavy-duty lifting and use a gantry as the mechanism to lift materials and objects.
Crawler cranes
Crawler cranes are fitted with caterpillar wheels so that they can traverse over difficult terrain. To get to and move heavy objects in that area.
Aerial cranes
Aerial cranes offer a higher range of lift as they are fixed to planes and helicopters to move objects around.
Hydraulic cranes
Hydraulic cranes are very efficient. They can move objects around with ease as they are powered by hydraulics in their movement.
The types of cranes vary greatly and it is always possible to find one that suits your particular needs and industry. Contact Cleveland Cranes today to find out more about our cranes for hire.