Most cranes start horizontal or vertical horizontal hydraulic lifts after the spreader has taken the material. After reaching the destination, the machine is unloaded, then the air travels to the reclaiming point, completes a work cycle, and then performs a second time. Lifting. Generally speaking, when the hoisting machinery is working, the taking, moving and unloading are carried out in sequence, and the work of each corresponding mechanism is intermittent. The hoisting machinery is mainly used for transporting pieces of goods. It can be used to transport bulk materials such as coal, ore and grain after being equipped with grabs. It can be used to transport liquid materials such as molten steel after being filled with barrels. Some lifting appliances such as elevators can also be used to carry people. In some applications, lifting equipment is also the main working machine. For example, cranes that load and unload materials at ports and stations are the main working machines. Steel poles are commonly used to carry several
types of electric power lines, distribution lines and lighting system. Distribution lines carry power from
local substations to customers. They generally carry voltages from 4.6 to 33kV
for distances up to 30 miles, and include transformers to step the voltage down
from the primary voltage to the lower secondary voltage used by the customer. A
service drop carries this lower
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Introduction to lifting machinery