Crane equipment also needs maintenance in the process of use. The maintenance of cranes should start from six aspects, namely, sufficient oil, sufficient water, sufficient air, and frequent inspection of fastening parts. The following is a detailed introduction to the maintenance measures and classification of crane equipment.
If the supply of diesel, gasoline, and air is not timely or interrupted, there will be difficulties in starting, poor combustion, power drop, and the crane engine cannot operate normally. If the oil supply is insufficient or interrupted, the engine will suffer from poor lubrication, serious body wear, and even burnt tiles. If the cooling water is insufficient, the machine temperature will be too high, the power will drop, the wear will increase, and the service life will be reduced.
Due to the influence of vibration, shock, and uneven load during the use of diesel engines and gasoline engines, bolts and nuts are easy to loosen. In addition, the adjustment bolts of each part must be checked to avoid accidents that damage the body due to looseness.
Diesel and gasoline are the main fuels of crane engines. If diesel and gasoline are impure, the precise matching body will be worn out, and the matching gap will increase, resulting in oil leakage, oil dripping, lower oil supply pressure, larger gaps, and even damage to the oil circuit. Serious failures such as blockage, shaft holding and burning of tiles. If the air contains a lot of dust, it will accelerate the wear of the cylinder liner, piston, and piston ring. If the cooling water is impure, the cooling system will be blocked by scale, which will hinder the heat dissipation of the crane engine, the lubrication conditions will be poor, and the machine body will be severely worn. If the surface of the body is not clean, the surface will be corroded and the service life will be shortened.
Before driving, the lubricating parts such as the bearing bushes should be lubricated. After starting, wait until the water temperature reaches 40°C-50°C before putting it into operation. Prolonged overloading or low-speed operation is strictly prohibited. Before stopping, unload the load and reduce the speed. After parking in winter, when the water temperature drops to 40°C-50°C, drain the cooling water except for the engine that has been filled with antifreeze. Usually, the maintenance work of the engine should be done regularly to keep the crane engine running in good condition. It is necessary to observe and check frequently, find faults and eliminate them in time.
This is the basis for extending the service life. Whether it is a new car or an overhauled engine, it must be run-in according to the regulations before it can be put into normal operation.
That is, the valve clearance, valve timing, fuel supply advance angle, fuel injection pressure and ignition timing of diesel or gasoline engines should be checked and adjusted in time to ensure that the crane engine is always in good technical condition, so as to save fuel and prolong its use life.
As an important part of the crane, the use, and maintenance of bearings are also of concern to everyone. Then, crane bearings often overheat during use, so how should we solve the overheating of cranes?
First, let’s briefly understand the causes of crane bearing overheating.
Crane bearings need continuous rotation and friction under working conditions, and heat will be generated continuously during the friction process, which is also the basic physics knowledge in middle school. Therefore, the overheating of the lifting bearing is mostly caused by the heat accumulation caused by its rapid rotation.
However, the continuous rotation and friction of crane equipment during use is inevitable, and we can only find ways to improve the problem of overheating of crane bearings. So, how to solve the problem of crane bearing overheating?
In view of the fineness and compactness of the bearing parts of the crane itself, the method of cooling and cooling is easier to realize than the heat dissipation design method. By introducing cooling water into the bearing bush or directly supplementing the cooling water circulation, the cooling effect of the lifting bearing can be achieved.
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