Although the leaf spring industry is a small industry in the entire manufacturing industry, its role cannot be underestimated. my country's industrial manufacturing and automobile industries must accelerate development, and the spring industry, one of the basic components, needs an ultra-early development stage to adapt to the rapid development of my country's entire industry. In addition, the expansion of the scale and variety of double torsion spring products and the improvement of quality levels are also the needs for updating mechanical equipment and improving the performance of supporting hosts. Therefore, spring leaf products play an important role in the development of the entire national industry.
The daily necessities and hardware industries, including lighters, toys, locks, door hinges, fitness equipment, mattresses, sofas, etc., have a huge demand for spring sheets , tens of billions of pieces, with low technical requirements and extremely low prices. They are usually produced by small leaf spring factories scattered across the country . They have unique advantages in cost, and it is difficult for large spring leaf factories to compete with them. Therefore, it also leads to the creation of new businesses from time to time. In the future, market demand will grow at an annual rate of 7% to 10%.
Types and functions of springs:
1. Spring classification
There are many types of springs. According to the force characteristics, springs are mainly divided into tension springs, compression springs, torsion springs and bending springs. According to the shape of the spring, it can be divided into coil spring, disc spring, ring spring, disc spring, coil spring, etc. The table lists the basic types of springs.
Spiral torsion spring is one of the most commonly used torsion springs. Coil springs have the characteristics of large rotation angle, large deformation, and large energy storage. The utility model is mainly used for presses and power devices of instruments and clocks. Leaf springs can withstand large bending impacts and are often used in the loading direction. They have limited volume and large deformation. Due to its good damping performance, it is widely used in automobile, tractor, and railway suspension devices.
2. Spring function
A spring is an elastic element that works through its own large elastic deformation. Widely used in various machinery. Its main functions are:
1) Control the movement of machinery, such as the spring that controls the opening and closing of the cylinder valve of an internal combustion engine and the control spring in the clutch;
2) Absorb vibration and impact energy, such as damping springs of various vehicles and springs of various buffers;
3) Store and release energy, such as clock springs, bolt springs, etc.;
4) Measuring force, such as springs in spring scales and dynamometers, etc.