German lisema springs lisema models lisema prices

lisema springs consist of tension springs and connecting springs. The pitch and helix direction of the tension spring and the connecting spring are identical. A specialized fixture is used to clamp one end of the tension spring and screw it into the connecting spring. The other end of the tension spring is then rotated and fitted onto the other end of the connecting spring. Rotational force is used to screw the connecting spring into the interior of the tension spring, forming a ring spring. This utility model ring spring does not affect the shape and elasticity of the connection point, and the secure connection is applied in various scenarios requiring ring springs. The ring spring is composed of alternating stacked washer-like spring steel discs with inner conical and outer cylindrical surfaces, and washer-like spring steel discs with inner cylindrical and outer conical surfaces. The number of pairs of inner and outer rings of the ring spring is determined based on the magnitude of the load it bears and the deformation requirements. Ring springs are used in applications with limited space that require strong buffering.

lisema Spring Introduction

Designed based on the principle of moment balance. Within the permissible load displacement, the load moment and the spring moment always remain in balance. For pipes and equipment supported by constant-force hangers, a constant supporting force is provided when displacement occurs, thus no additional stress is imposed on the piping equipment. Constant-force hangers are generally used where displacement stress needs to be reduced, such as suspended parts of power plant boiler bodies, steam, water, flue gas, and air ducts, and burners in power plants, as well as in the petroleum and chemical industries where such support is required. It is a mechanical component that works using elasticity. Components made of elastic material deform under external force and return to their original shape after the external force is removed. Also referred to as "spring". Generally made of spring steel. Springs are complex and diverse in type; classified by shape, they mainly include helical springs, spiral springs, leaf springs, and special-shaped springs.

lisema Spring Classification

1) Torsion springs are springs that withstand torsional deformation; their working part is also closely wound into a helical shape. The end structure of a torsion spring is processed into torsion arms of various shapes, rather than hooks or loops. Torsion springs utilize the lever principle, twisting or rotating elastic materials with softness and high toughness to store significant mechanical energy. 2) Tension springs are helical springs that withstand axial tensile forces. When not under load, the coils of a tension spring are generally tightly closed with no gap between them. 3) Compression springs are helical springs that withstand axial compressive forces. The cross-section of the material used is mostly circular, but rectangular and multi-strand steel wires are also used. Springs generally have equal pitch. Shapes of compression springs include: cylindrical, conical, convex, concave, and a small number of non-circular shapes. There is a certain gap between the coils of a compression spring. When subjected to external load, the spring contracts and deforms, storing deformation energy. 4) Progressive springs adopt a design with inconsistent wire thickness and coil spacing. The advantage is that under low pressure, the section with a lower spring rate absorbs road undulations, ensuring ride comfort. When pressure increases to a certain level, the thicker section of the spring supports the vehicle body. The disadvantage of this type of spring is that the handling feel is not direct, and precision is poorer. 5) Linear springs have consistent wire thickness and coil spacing from top to bottom, with a fixed spring rate. This design allows vehicles to achieve more stable and linear dynamic responses, facilitating better vehicle control for the driver. They are mostly used in performance-oriented modified cars and racing vehicles. The downside is, of course, compromised comfort. 6) Short springs are shorter and stouter than original factory springs. Installing short springs can effectively lower the vehicle's center of gravity, reduce body roll during cornering, make cornering more stable and smooth, and improve cornering handling. However, original shock absorbers have damping settings biased towards comfort, so the combination of short springs and original shock absorbers is not very stable. They cannot effectively suppress the rebound and compression of short springs. When driving on bumpy roads, there will be an uncomfortable bouncing sensation. Over time, the service life of the shock absorbers will be greatly shortened, and oil leakage may occur. Of course, these conditions are relative; daily driving will not cause such severe damage. Moreover, aggressive driving should be avoided, as original shock absorbers cannot withstand high-load pressures.

lisema Spring Features

Suspensions using torsion bar springs have lighter mass, simpler structures, and do not require lubrication. By adjusting the installation angle of the fixed end of the torsion bar spring, automatic adjustment of vehicle height is easily achieved. Torsion bar springs store greater elastic energy per unit volume and have low mass. Compared to helical springs, torsion bar springs have a compact structure and are easy to arrange. Torsion bar springs are widely used in off-road vehicles, light passenger cars, and trucks. Torsion bar springs can be classified by cross-sectional shape into circular, tubular, and flat types. Circular solid torsion bars have a simple structure and are the most commonly used. To assemble the torsion bar, both ends are machined with splines, hexagonal, square, or other shapes. Since the spline head dimensions are relatively small, spline connections are mostly used. Generally, the major diameter of the spline is 1.2 to 1.3 times the working diameter of the torsion bar, and the spline length is approximately 1.4 times the major diameter of the spline. As long as the crushing stress of the spline teeth is within permissible limits, the spline teeth should not be selected to be excessively long. Torsion bar springs generally use involute splines GB3478. In the JSB2705 standard, the recommended standard pressure angle for splines is 45°; the modules are 1mm and 0.75mm. To facilitate the assembly of torsion bar springs, some designs feature unequal diameters for the splines at both ends, or a blind tooth is machined on the spline teeth at both ends.

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