What to do if the small excavator is overheated

[BONOVO]

Using excavators and other construction machinery products in summer can easily cause the oil temperature to be too high during use. This is the most troublesome problem for using excavators in summer. The common faults of high-temperature excavator hydraulic systems are complicated and it is troublesome to deal with them thoroughly. Here we briefly introduce some methods to solve high temperatures as much as possible.

The heat dissipation efficiency of the radiator is low. By replacing the tube-fin radiator with a plate-fin radiator, the heat dissipation area can be increased by 8cm2, and the temperature difference between the inlet and outlet of the radiator can be increased from 7°C to 10°C, which is very effective. The crawler excavator of Baoding Excavator Manufacturer uses an integrated radiator with a large fan blade with a wind ring. The air volume is directly directed to the radiator with small losses. Pay attention to cleaning the radiator in summer. The probability of high temperature will be very low.

Reduce the pressure of the hydraulic system to reduce the load of the system. Under the premise of meeting the system back pressure, the 0.30MPa one-way valve can be changed to a 0.15MPa one-way valve, and the protection pressure of the oil cooler can be increased to 0.35MPa.

The fins of the radiator air duct of the hydraulic system are inverted or the oil channel is blocked, resulting in increased wind resistance and poor heat dissipation effect. The inverted fins should be adjusted in time, the air duct blockages should be cleaned, and the air duct should be flushed regularly with water of a certain pressure to ensure smooth air duct.

Improper selection of hydraulic oil brand or poor oil quality. If the viscosity of the hydraulic oil is too low, it will increase internal leakage, reduce efficiency and generate heat; if the viscosity is too high, the fluid pressure loss will increase, which can generate a lot of heat and cause the oil temperature to be too high. At the same time, poor oil quality is easy to emulsify, which can aggravate the damage of hydraulic components.

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