German leschhorn springs leschhorn models leschhorn prices

leschhorn spring is a special type of extension spring, suitable for applications with large elongation and constant load. Constant-force springs consist of spiral metal strips; the inner side of the strip is curved so that each coil wraps tightly around the inner coil. When the metal strip is stretched (twisted), internal stress resists the load force, similar to ordinary extension springs, but the spring rate remains nearly constant (zero). See the load/torsion diagram. In use, an ID is typically used to wind this spring tightly onto a drum, with its free end connected to the load, acting like a counterweight. Alternatively, the free end can be fixed, allowing the spring itself to provide the working force, similar to carbon brushes in electrical devices.

leschhorn spring applications

Extension springs, also known as helical extension springs, generally have uniform pitch and circular cross-sections. They are suitable for many occasions, such as production assembly, testing, R&D, and maintenance. Extension springs hold an important position in the global market and are widely used in national defense, marine, computer, electronics, automotive, mold, medical, biochemical, aerospace, railway, nuclear power, wind power, thermal power, construction machinery, mining machinery, building machinery, elevators, and other fields.

leschhorn spring structure and principle

A torsion bar spring is essentially a torsion bar made of spring steel. The cross-section of the torsion bar is usually circular, with some being tubular or rectangular. Its ends can be shaped as splines, square, hexagonal, or cylindrical with flat surfaces, allowing one end to be fixed to the vehicle frame and the other to the suspension arm, which is connected to the wheel. One end of the torsion bar spring is fixed to the frame, and the other is connected to the wheel via the suspension arm. When the wheel encounters an obstacle and moves upward, it drives the suspension arm to rotate around the torsion bar axis by a certain angle, causing torsional deformation (elastic deformation) of the torsion bar. The elastic energy stored in the torsional deformation is released when the wheel leaves the obstacle, allowing the force transmission mechanism and the wheel to return to position quickly. During manufacturing, the torsion bar is pre-twisted to create permanent deformation and introduce prestress. The direction of pre-torsion is the same as the working torsion direction when installed on the vehicle, aiming to reduce actual stress during operation and extend service life. Note that left and right torsion bars are not interchangeable.

leschhorn spring classification

1) Standard disc springs, trapezoidal cross-section disc springs, conical trapezoidal cross-section. Disc springs: Simple shape and structure, widely used. They can be used individually, in opposed pairs, stacked combinations, or composite groups to withstand static or variable loads, serving as high-strength buffer and vibration-damping springs in heavy machinery, aircraft, artillery, and other weapons. 2) Diaphragm springs: Mainly used in automotive clutches, functioning through separation fingers and disc spring components. 3) Wave washers: Extensively used in mechanical seals, further developable into spiral wave springs. 4) Slotted disc springs: Typically used in clutches, such as those in lathes, automobiles, and tractors. 5) Circular plate disc springs: Circular plate cross-section that deforms into a truncated cone under load. Simple structure with high stiffness, used for special requirements. 6) Helical disc springs: Possess dual characteristics of disc springs and helical springs, allowing for different stiffness requirements. 7) Wave cylindrical springs (wave springs): Formed by stacking wave washers into a cylindrical shape, allowing for greater deformation.

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