We are all aware that typically, thetruck-mounted crane is outfitted with a hydraulic system. The lifting of heavy objects by the truck-mounted crane is accomplished through the operation of this hydraulic system. Consequently, the hydraulic system stands as the core component of thetruck-mounted crane. Some customers have raised the question: What are the potential dangers that can arise from an excessively high oil temperature in the hydraulic system of the truck-mounted crane? Next, the editor will elaborate on the possible hazards resulting from such a situation.
Excessive oil temperature in the hydraulic system leads to a reduction in the viscosity of the hydraulic oil. This, in turn, lowers the volumetric efficiency and working efficiency of the hydraulic system. An increase in leakage occurs, and in severe cases, it can even render the truck-mounted crane unable to operate properly.
Let’s delve deeper into this aspect. The viscosity of hydraulic oil is crucial for the efficient functioning of the system. When the temperature rises beyond a certain limit, the oil becomes less viscous, which means it flows more freely but with less resistance. This can result in reduced pressure within the system and compromised power transmission, ultimately affecting the lifting capacity and performance of the crane.
When the oil temperature of the hydraulic system climbs too high, the components of the system expand due to excessive heat. This expansion disrupts the original normal fit clearances between the relative moving parts, leading to an increase in friction resistance. As a consequence, hydraulic valves are more prone to jamming. Simultaneously, the lubricating film thins out, and mechanical wear intensifies. This results in the premature failure or even scrapping of the precisely mating surfaces of pumps, valves, motors, and other components due to premature wear.
For instance, consider the interaction between pistons and cylinders within a hydraulic pump. When the temperature causes the components to expand, the clearance between the piston and the cylinder wall may decrease. This not only increases friction but also can lead to scoring and damage to the surfaces, significantly reducing the component’s lifespan and performance.
An overly high oil temperature in the hydraulic system accelerates the aging and deterioration of rubber seals. This shortens their lifespan and, in extreme cases, can even cause them to lose their sealing performance, resulting in severe leakage within the hydraulic system.
Rubber seals are vital for maintaining the integrity and pressure within the hydraulic system. Prolonged exposure to high temperatures causes the rubber to become brittle, crack, or deform, allowing hydraulic oil to escape from joints and connections. This leakage not only reduces the system’s efficiency but also poses environmental and safety risks.
Excessive oil temperature in the hydraulic system can cause the oil to vaporize and the moisture within it to evaporate. This is prone to inducing cavitation in the hydraulic components. Additionally, the oxidation of the oil leads to the formation of colloidal deposits that are likely to clog the small holes in the oil filter and hydraulic valves, thereby preventing the hydraulic system from functioning properly.
Cavitation occurs when vapor bubbles form and collapse within the hydraulic fluid due to rapid pressure changes. This can cause pitting and damage to the internal surfaces of components. The formation of colloidal deposits restricts the flow of oil and impedes the proper operation of valves and filters, further disrupting the smooth functioning of the hydraulic system.
Consequently, an excessively high temperature of the hydraulic oil has a significant negative impact on the normal usage of the machine. It reduces the lifespan of hydraulic components and escalates the maintenance costs of the truck-mounted crane. Vehicle owners and friends should make every effort to control the oil temperature of the hydraulic system during usage.
Regular monitoring of the oil temperature, ensuring proper cooling mechanisms are functioning correctly, and adhering to recommended operating procedures and maintenance schedules are all essential steps in preventing excessive oil temperature and its associated hazards. By taking these precautions, the reliability, performance, and longevity of the truck-mounted crane‘s hydraulic system can be maintained, minimizing downtime and repair expenses.
In summary, understanding and addressing the issue of excessive oil temperature in the hydraulic system is of paramount importance for the smooth and efficient operation of the truck-mounted crane and for maximizing its overall economic and operational benefits.
