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How to maintain the hydraulic cargo lift in winter? The weather and temperature of each season are different, and the maintenance and maintenance of the hydraulic cargo lift are also different. In winter, the weather will be colder and the temperature will be lower, which is easy to make the hydraulic cargo lift There are defects such as welding cracks, lack of fusion, and deterioration of the structure.
Therefore, it is necessary to make more and better maintenance measures for hydraulic cargo lifts in winter.
1, the reasonable choice of steel for hydraulic lift freight elevators at low temperature: At low temperature, the material of the main force-bearing components must not only meet the requirements of strength, but also meet the requirements of impact toughness. The welding structure of low-temperature stress-bearing components has a great influence on the welding thermal stress and stress concentration, so the Taili structure should be selected.
2, the reasonable selection of hydraulic oil, lubricating grease and diesel oil: hydraulic oil is used as the working medium to transmit power to the outrigger retraction system of the hydraulic lift freight elevator and the hoisting, luffing, slewing and telescopic actions of the lifting operation. The viscosity of hydraulic oil is very important. If the viscosity is too high, the internal friction resistance of the system will increase, the pressure loss will increase, the oil temperature will rise too fast, and the action will lag during operation; if the viscosity is too low, the volumetric efficiency of the pump will be low, the lubrication performance will be poor, and the parts The frictional resistance between motion increases. The viscosity of hydraulic oil varies with the working temperature, so special attention should be paid when selecting hydraulic oil for low temperature.
3, when lubricating oil, gearbox, transfer case, drive axle, hoisting mechanism, and slewing mechanism operate at low temperature, the lubricating oil of hydraulic elevator should choose gear oil with high viscosity index, low freezing point and good lubricity. Otherwise, the transmission efficiency will be significantly reduced, the wear of the transmission parts will increase, the gearbox and transfer case will be heavy to operate, and the gear shifting will be difficult.
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