Loading Quality and Driving Speed Should Be Controlled During the Use of Loader Tyres
Ⅰ. How to control the loading quality and driving speed of loader tyres in use?
Loading quality and driving speed should be controlled during the use of loader tyres. National tire standards specify the maximum load for a given tire pressure at a given speed.
The loader tyre pressure recommended by the manufacturer is determined according to the national standard requirements under the rated load of the vehicle and the load on the tire during normal operation.
Therefore, the vehicle must be loaded according to the rated load calibrated by the loader. Under normal circumstances, the overload within 15% is acceptable. Overload work will increase the deformation of the tire and seriously affect the service life of the tire. If it is necessary to overload the tire under special circumstances, the cold air pressure of the tire should be increased appropriately, but it should not be used for a long time.
Most loaders use low-pressure wide-base bias tires. The allowable radial deformation of this type of tire is 3% to 4% of the tire diameter. In the actual operation process, attention should be paid to the radial deformation of the tire so that the deformation should not exceed this scope.
Similarly, the driving speed has a great influence on the life of the loader tyre. In actual use, the speed and the load have the same meaning, and the speed is more important in some cases.
In order to achieve the best use effect, if the speed of the vehicle is higher than the rated speed of the tire, the transport load should be appropriately reduced; if the speed of the vehicle is lower than the rated speed of the tire, the transport load can be appropriately increased.
Due to the contact and friction of the loader tyres with the ground in actual use, the tire carcass vibrates, and the circumferential and lateral deformation occurs, which intensifies with the increase of the vehicle speed, and the tire temperature will rise sharply, resulting in tire burst.
Ⅱ. What are the reasons for the tire blowout of the loader?
Usually, the reasons for the tire blowout of the loader are as follows:
1. Excessive tire pressure will cause a blowout. For a vehicle traveling at high speed, the temperature of the tire will rise, and the tire pressure will also increase accordingly. In addition, the tire itself has a high pressure. If it encounters an impact, it is very likely to crack or blow out.
2. If the tire pressure is too low, it will cause a blowout. For vehicles with low tire pressure, the tires will be continuously squeezed and deformed when driving at high speed, which will generate a lot of heat and increase the risk of tire blowout.
Moreover, if the tire pressure is too low, it is easy to cause partial wear on the tire wall when turning, and the tire wall is the weakest part of the tire. Severe wear will also lead to a blowout.
3. A tire leak will cause a blowout. For example, if the tire is slowly leaking air, the tire is nailed, etc., the tire pressure will gradually decrease, and there will be a risk of a tire blowout.
4. If the tire itself is faulty, it will cause a puncture. For example, tire bulges, loader tyre sidewalls have serious scratches, tire pattern wear has reached the limit, tires have serious partial wear, tires are aging seriously, tire surfaces are corroded, tire plies have air bubbles, etc. When there is a problem with the tire itself, the risk of a flat tire increases.
5. The road condition is bad. This is the same as wearing your own shoes. Of course, the same pair of shoes will wear out faster on uneven roads than on flat roads.
Moreover, at high speeds, loader tyres are easily hit by sharp objects on the road and cause a puncture.