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The Three Mistakes in the Engine Maintenance of the Low Flatbed Tractor Semitrailer Need to Avoid
The engine of the low-bed semi-trailer tractor is like our heart. If the daily maintenance is not in place or neglected, it will directly affect our travel. Therefore, the maintenance of the low-profile semi-trailer tractor engine is the most important link in the car. . Today, Manager of Shandong Hongsheng Automobile Industry Co., Ltd. introduced the three major mistakes of engine maintenance for everyone. First, the engine is okay but the high temperature is not good
Many semi-trailers think that high engine temperatures when the car is driving will cause damage to the engine. However, the damage to the engine will not only be caused by excessive engine temperature. If the temperature is too low, the engine will be abnormally worn, and the engine should be maintained during daily driving. In normal temperature, this can guarantee the service life of the engine.
Second, the water pump fan belt tightening as possible Although tightening will increase the transmission force, but the belt too tight will not only make the belt stretch or even break, greatly shorten the life of the belt, but also because the tension is too large, leading to the generator shaft , water pump shaft deflection and early damage to the bearing. The normal normal belt assembly deflection is 10-15mm. Third, use the engine to warm up
When the engine is idling, the engine oil pump cannot effectively press the lubricant into various lubrication surfaces due to the low engine speed, and the oil pressure is also low, so that the engine parts of the engine are in dry friction or semi-dry friction state; Due to the low temperature, the fuel mixture may be poorly atomized, causing unburned fuel to enter the crankcase, flushing out the oil film on the cylinder wall, and accelerating engine wear. Therefore, after the engine is started for a few seconds, it should be warmed up quickly to improve the lubrication conditions of the engine.
Heavy-duty, low-profile semitrailers are used for trailers loaded with very large and oversized cargo. The basic form of heavy-duty trailers is a single flatbed trailer. It generally has the following structure. The frame and the axle shaft are mostly two-axis collinear, that is, there are two axle shafts on one axis, which are also called two-axis columns. The common single plate trailer has 2-7 axes. One axle has 4 tires and there are 8 tires in one axis. So the width of the whole car can reach more than 3 meters. In order to reduce the center of gravity of the entire vehicle, steel radial tires with a small diameter and large load capacity (see automobile tires) are generally used, and each tire can withstand a load of about 4 tons under low-speed operating conditions. The frame adopts welded structure of high strength alloy steel box section. Usually a 5-axis, two-axis single plate trailer can carry more than 100 tons.
Three-line, six-axis low plate, two-wire four-axle, four-wire eight-axis, hydraulic steering lift axis car, one-line biaxial, multi-axis heavy-duty low-profile, multi-spindle heavy-duty low-profile semi-trailer, adopts 8.25-16 tires and adopts hydraulic goose Neck structure Hongsheng car industry, the loading platform height can be automatically raised and lowered, the length of the cargo platform can be arbitrarily spliced, hydraulic fully automatic steering, and the power system of the hydraulic pump station is provided. Now we need to introduce technology. The series of low-profile semi-trailers have plate-type, concave-girder-type and tire-outlet-type structures. The frame of the semi-trailer is ladder-shaped and the cross-section of the girder is I-shaped. It has the features of high rigidity and strong height. The low shelf level of the car's shelf has ensured the smoothness of transportation and is suitable for carrying all types of construction machinery, large-scale equipment and steel products.