Springs are widely used elastic components in mechanical engineering. They store and release energy through elastic deformation to achieve functions such as cushioning, vibration reduction, reset, and clamping. There are various ways to classify springs, with the core classifications based on structural form, load characteristics, material, precision grade, and other dimensions. Below is a structured and directly applicable classification system (including key technical parameters and application scenarios):
I. Classification by Structural Form (Most commonly used, directly related to installation method and function)
Type | Structural Features | Key Parameters | Typical Application Scenarios
1. Helical Spring | Made by winding spring wire into a helix, with subtypes including cylindrical, conical, and variable pitch | Wire diameter d, mean diameter D, effective number of coils n, free height H₀, hand (left-hand/right-hand), stiffness k | Most通用 in mechanical structures, such as automotive suspensions, machine tool fixtures, valve reset, and electronic device vibration damping
2. Belleville Spring (Dish Spring) | Conical ring-shaped thin plate; stiffness can be adjusted by stacking | Outer diameter D, inner diameter d, thickness t, cone angle α, load capacity F, deformation amount δ | High-pressure equipment, clutches, brakes, heavy machinery cushioning (scenarios with small space and high load)
3. Leaf Spring | Composed of multiple unequal-length spring steel plates stacked together,呈弓形 | Number of leaves n, total width B, total thickness h, span L, deflection f, allowable stress [σ] | Vehicle frame vibration damping (trucks, buses), engineering machinery suspension, railway vehicle cushioning
4. Torsion Spring | Helical shape with hooks/arms at the ends; undergoes torsional deformation under load | Wire diameter d, mean diameter D, effective number of coils n, torsional stiffness k, maximum torsion angle θmax, arm length L | Lock reset, toy wind-up mechanisms, automotive seat adjustment, instrument pointer reset
5. Spiral Spring | Planar spiral shape; one end is fixed, the other can rotate around the center to store torque energy | Strip thickness t, strip width b, outer diameter D, inner diameter d, free length L, maximum torque Tmax | Clock mainsprings, motor carbon brush holders, reel mechanisms (such as tape measures, sunshades)
6. Special-shaped Spring (Irregular Spring) | Non-standard structures (such as wave-shaped, snake-shaped, U-shaped, V-shaped) | Designed according to actual working conditions (e.g., number of waves and amplitude for wave springs;
