German knoerzer springs knoerzer models knoerzer prices

knoerzer springs are commonly used in wheeled vehicle suspensions. Initially known as laminated or bracket springs, and sometimes as semi-elliptical or cart springs, they are one of the oldest spring forms, dating back to the Middle Ages. Leaf springs consist of long, arc-shaped spring steel strips with a rectangular cross-section. In the most common configuration, the center of the arc provides the axle location, while loops formed at either end attach to the vehicle chassis. For very heavy vehicles, leaf springs can be made from multiple leaves stacked together, typically with progressively shorter lengths. Leaf springs can be used for positioning, a degree of damping, and spring functionality. Although interleaf friction provides damping, it is poorly controlled and results in static friction during suspension movement. For this reason, some manufacturers have begun using single-leaf springs. Leaf springs can be connected directly to the frame at both ends, or directly at one end (usually the front), with the other end connected via a shackle or short swing arm. The tension strap introduces a tendency for the leaves to elongate under compression, thereby making the spring action softer. Some springs terminate in a recessed end, known as a spoon end (rarely used), designed to support rotating components.

knoerzer Spring Introduction

Designed based on the principle of moment balance. Within the permissible load displacement, the load moment and spring moment remain balanced at all times. For pipes and equipment supported by constant-load hangers, a constant supporting force is provided during displacement, thus avoiding additional stress on the piping and equipment. Constant-load hangers are generally used in locations where displacement stress needs to be reduced, such as suspended parts of power plant boiler bodies, steam, water, flue gas, and air ducts in power plants, burners, and similar support requirements in the petroleum and chemical industries. A spring is a mechanical component that operates using elasticity. Components made of elastic material deform under external force and return to their original shape after the force is removed. Also referred to as "spring." They are generally made from spring steel. Springs come in complex and diverse types; classified by shape, the main types include helical springs, spiral springs, leaf springs, and special-shaped springs.

knoerzer Spring Structural Classification

Based on the nature of the applied force, springs can be classified into tension springs, compression springs, torsion springs, and bending springs. Based on shape, they can be classified into disc springs, ring springs, leaf springs, helical springs, truncated conical spiral springs, and torsion bar springs. Based on the manufacturing process, they can be classified into cold-coiled springs and hot-coiled springs. Ordinary cylindrical helical springs are the most widely used due to their simple manufacturing process, simple structure, and ability to be made into various forms according to loading conditions. Spring manufacturing materials should generally possess high elastic limits, fatigue limits, impact toughness, and good heat treatment properties. Commonly used materials include carbon spring steel, alloy spring steel, stainless spring steel, as well as copper alloys, nickel alloys, and rubber. Spring manufacturing methods include cold coiling and hot coiling. Spring wire diameters less than 8 mm are generally cold-coiled, while those greater than 8 mm are hot-coiled. Some springs undergo strong pressure or shot peening treatment after manufacturing to improve their load-bearing capacity.

knoerzer Spring Applications

Disc springs are replacing cylindrical helical springs in a wide range of applications. They are commonly used in heavy machinery (such as presses) and weapons like artillery and aircraft as high-strength buffer and vibration-damping springs. They are also used as clamping springs for automobile and tractor clutches and safety valves, and as energy storage elements in mobile mechanisms. Disadvantage: Load deviation is difficult to guarantee. Disc springs can be divided into three categories based on cross-sectional shape: ordinary disc springs (rectangular cross-section), disc springs with radial grooves, and trapezoidal cross-section disc springs. Ordinary disc springs are divided into two types: with support surface and without support surface. Disc springs with radial grooves are derived from ordinary disc springs, with several uniformly distributed slots cut radially. These slots can be cut from the inner hole toward the outer circumference, or from the outer circumference toward the inner hole. Trapezoidal cross-section disc springs are divided into two types: those with inner edge thickness greater than outer edge thickness, and those with inner edge thickness less than outer edge thickness. Since the deformation and load values of a single disc spring often fail to meet usage requirements, they can be used in groups to form disc spring assemblies (columns). Typical combinations include: stacked combination disc springs, compound combination disc springs, and other combined disc springs. Compared to cylindrical helical springs, disc springs have the following characteristics: 1) The load-deformation characteristic curve is non-linear. 2) Disc springs are thin and easily formed into assemblies, allowing for modular assembly and replacement, which facilitates maintenance. 3) Disc springs with radial slots exhibit zero stiffness characteristics. This feature can be applied in situations where the spring force is required to remain basically stable within a certain deformation range. 4) The vibration absorption performance of disc springs is no lower than that of cylindrical helical springs. When using stacked combinations, friction between the disc spring sheets provides significant damping, dissipating impact energy.

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