What is the structure of the crane?
Crane is a kind of crane transportation machinery widely used in ports, workshops, electric power, construction sites, etc. The name of the crane is the unified name of the crane. Generally known as cranes, there are truck cranes, crawler cranes and tire cranes. The purpose of crane is crane, structure, lifting, machinery and structure.
Crane is the general name of crane. Crane is a kind of crane, which is a machine with cycle and intermittent movement. The working cycle includes lifting the goods from the picking position, moving horizontally to the specified position, and then moving backwards to return the picking device to its original position for the next cycle. Fixed rotary crane, tower crane, truck crane, tire crane, crawler crane, etc.
A multifunctional crane capable of lifting heavy objects vertically and horizontally within a certain range. Also called crane. It belongs to material handling machine. The crane is characterized by intermittent movement. That is, in a work cycle, the corresponding mechanisms for material collection, movement, unloading and other actions work in turn.
What is the early form of crane? Now let's analyze it together.
Oranges used for irrigation in ancient China are the early form of octagonal cranes.
In western Europe in the 14th century, there appeared a slewing jib crane driven by manpower and axial force.
At the beginning of the 19th century, bridge cranes appeared. The important wear parts of the crane (such as shafts, gears, slings, etc.) began to be made of metal materials and began to drive water.
In the late 19th century, steam-driven cranes gradually replaced hydraulic cranes.
Since the 20th century, the electric power industry and the internal combustion engine industry have developed rapidly, and various cranes powered by electric motors or internal combustion engines have basically taken shape.
What is the structure of the crane? Now let's analyze it together.
The crane mainly includes elevator, running mechanism, luffing mechanism, rotating mechanism, metal structure, etc. The lifting mechanism is the basic working mechanism of the crane, mainly composed of the suspension system and the winch. Sometimes, heavy objects are lifted by the hydraulic system.
The operating mechanism of the crane is used to move the weight vertically or adjust the working position of the crane. It usually consists of motor, reducer, brake and wheel. The luffing mechanism is only installed on the cantilever crane. The width of the handrail decreases when lifting and increases when bending. There are two types of luffing: balanced luffing and unbalanced luffing. The rotating mechanism of the crane is used to rotate the handrail, which is composed of a driving device and a rotating support device. The metal structure of the crane is the skeleton of the crane, and the main loads (such as pallet, boom and gantry) can be used as support beams, including box structure or Truss structure, web structure and some available steel.
