What is a crane?
A type of machine made in the shape of human arms is called a crane. This mechanical structure, which is made of small and large parts, is used in construction projects to remove objects. This mechanical arm is often placed on the ground or another machine and moves objects with the help of its metal arm. The ropes and pulleys installed in this device are a suitable lever for lifting objects from low heights and moving them to high places in construction projects. The construction of this device goes back to ancient times and the lands of Greece and Rome. Both civilizations used this structure for the construction of high buildings.
How are the cranes controlled?
In the first method, the person sitting in the crane cabin moves the machine and controls the crane with the help of buttons that are connected to the device by means of a cable, and the other type of control of this machine is wireless. takes place The person who controls the crane is called the operator, who is responsible for controlling the machine and the health of people who are in contact with this machine.
What are the types of cranes?
Ceiling crane
One of the types of cranes is the type known as the ceiling crane, which is used in places that have a ceiling so that it can be connected to the ceiling. And he used this mechanical arm to lift heavy objects. One of the advantages of this mechanical structure is the ability to move heavy objects, access to most of the places needed to remove heavy objects, the low cost of its maintenance, and the ease of use of this machine.
Gantry crane
The gantry crane is very similar to its roof type, and the main difference between these two types is having two columns connected to the bridge and a clevis that moves the whole way along with the crane. he does. This type of crane is known with two types of single bridge and double bridge. The operator must be very careful in using this type of crane and minimize the possibility of an accident.
Wall Crane
As the name of this structure suggests. The wall crane can be installed on the columns in the sheds and on the wall of the machinery body, near the place of use. This machine is installed and operated by connecting to the wall, and according to the client's request, its adjustment is done according to the length of the route used. In places where it is not possible to use all kinds of cranes, often the only solution is to use a wall crane. The capacity of this machine reaches 15 tons and can be used in assembly stations, sheds and workshops and in some cases unlimited environments. These cranes are used to help other cranes, such as being under overhead cranes and helping main cranes to move objects.
Arm crane
Another type of wall cranes is known as wall arm cranes. One type of these cranes can rotate 180 degrees and their longitudinal movement is an alternative to rotary movement. Another type is articulated and used to access the corners of the construction site.
How is the security in the use of crane?
The operator of this structure must be a person with experience and precision in guiding this mechanical structure. The amount of load that can be carried by each type of this machine is known, and a suitable crane should be used for each amount of load. It is very important to pay attention to the environmental conditions in which the structure is placed, because strong wind and natural factors such as earthquakes and heavy rain cause disturbances in its movement, for example, strong wind affects the longitudinal and transverse movement of the mechanical arm and the direction It changes. Exposing this car to sunlight will cause a disturbance in its electrical and motor system.