Some Lesser-known Facts About Excavators

Excavators are not only capable of excavation tasks; they can also perform various functions by equipping different attachments. For example, a hydraulic grab can be used for material handling, a hydraulic hammer is effective for breaking rocks, crushing stones, and demolition work, while a ripper can be used for digging into cracked rocks, breaking frozen ground, and excavating asphalt surfaces. A hydraulic shear is useful for demolition and rescue operations. Therefore, excavators cannot simply be referred to as "digging machines."

When an excavator strikes a cable, the operator inside the cab does not get electrocuted. This is because the excavator acts as an equipotential body. When the boom makes contact with a high-voltage line, the entire machine becomes electrified, and the operator is also subjected to high voltage. However, because the electrical potential is the same throughout the cab, no current passes through the operator's body, thus avoiding electrocution. It is important to note that after striking a cable, the operator should not exit the machine hastily to avoid the risk of electric shock.

The complexity and specialization of excavators are evident in both their design and operation. For example, excavators are typically equipped with a boom that is sufficient to meet most construction needs. However, operating a single-arm excavator requires the operator to undergo training for a period of time to master its use. Additionally, excavators require operators to use joysticks for control, as many construction sites have complex conditions and high operational demands. Using joysticks allows for better adaptation to the working conditions and construction requirements.

Excavators require regular maintenance and servicing during daily use, which includes tasks such as replacing filters, checking the engine valve clearance, changing the bucket teeth, and adjusting the bucket clearance. These measures are essential to ensure normal operation and extend the machine's lifespan. Overall, excavators are versatile machines that are complex to operate and require specialized maintenance and care. During operation, it is important to prioritize safety, adhere to operational protocols, and avoid accidents.