How to solve the problem of overweight refrigerator?
solve the problem of overweight refrigerator
Following the problem of the national policy blue card overweight refrigerator and the overload of the big truck, the major manufacturers now have a lightweight design of the dedicated truck chassis to solve the problem of overweight and overloading of the blue card on the light card. The editor learned that the light card and lightweight ideas on the market are generally carried out from three aspects: new materials,overweight refrigerator new processes, and structure optimization.new material:
The new materials of lightweight chassis are lightweight materials such as aluminum alloy, engineering plastics, high strength steel, and composite materials. Where is it mainly reflected? Generally reflected in the engine flywheel, oil bottom shell, overweight refrigerator transmission shell, gas storage cylinder, fuel tank, wheels, etc. Steel et al.; The cargo box uses aluminum alloy materials or composite materials for weight loss.
1.Generally, the flywheel and oil bottom shell of the engine of the chassis are cast iron. The strength is very cheap, but the weight is heavy;
in order to reduce the weight, many engine manufacturers have begun to use aluminum alloy materials. Crafts, overweight refrigerator the weight decreases by more than 50%, and the weight loss effect is very obvious.
2.Lightweight chassis engine transmission shell manufacturing process has also been replaced from cast iron to aluminum. The weight loss can be more than 50%, overweight refrigerator and the weight loss effect is quite obvious.
3.Lightweight chassis brake storage cylinders have generally adopted aluminum alloy storage cylinders, overweight refrigerator and the weight decreases by about 15%. Another advantage of using aluminum alloy is not to worry about the risk of aluminum alloy storage cylinders to ensure good braking effects.
4.The previous chassis fuel tank was gradually widely used in the lightweight chassis and the lightweight chassis.
5. The previous steel plate spring was from the initial cross sectional multi piece steel plate springs to the cross section less steel plate spring. As the weight loss situation became more and more severe, overweight refrigerator each manufacturer was also actively reserved composite steel plate springs. Although the price was due to the price High reason has not been real on the lightweight chassis, but technology has become more and more mature. The steel plate springs of composite materials are mainly composed of glass fiber and resin. The weight loss amplitude can reach more than 30%compared to less springs.
The composite material board spring not only has a significant lightweight effect, but also has a high fatigue strength, which will not produce a one time break.The failure will have a layered warning. The smoothness and noise attenuation are better than the steel plate spring. , Strong carrying capacity. However, overweight refrigerator due to the various opposite sexes of composite materials, overweight refrigerator the number and direction of the fiber laying layer and direction need to be accurately calculated. In the design, the friction between the composite materials and the metal should be avoided, focusing on its advantages.
6. Lightweight chassis uses high strength steel plates that can achieve the thickness and weight of thinning the beam. While lightweight, it increases safety performance. High strength steel generally refers to steel with cold rolling 340MPa and hot rolling 490MPa. These new high strength steel plates have a low strength ratio, better strain distribution capacity and high strain hardening characteristics. At the same time, overweight refrigerator high strength steel plate mechanics Performance is more uniform, so as to have better collision characteristics and higher fatigue life. Usually the frame beam is gradually upgraded from the initial 370L steel plate to the 550L high strength steel plate, and even the 700L high strength steel plate in recent years. Small and thinner thickness,overweight refrigerator this can effectively reduce the weight of the frame.