German atv elmer springs, atv elmer models, atv elmer prices

atv elmer springs, as elastic elements, are widely used in the suspensions of modern automobiles, including passenger cars, trucks, and off-road vehicles. Compared with leaf springs, torsion bar springs offer a series of advantages: high energy storage per unit mass, which reduces vehicle weight and saves material; since the torsion bar spring is fixed to the frame, it reduces unsprung mass, helping to improve ride smoothness; when applied to the front suspension of front-wheel-drive vehicles, the torsion bar spring can be arranged longitudinally, leaving space for the swinging half-shafts of the front drive axle. However, the manufacturing cost of torsion bars is relatively high, with strict requirements on materials and processes. In addition, torsion bar springs serve only as elastic elements and must be equipped with guiding mechanisms. Torsion bar springs are made of chrome-vanadium alloy spring steel, and their surfaces are very smooth after machining. The surface of the torsion bar must be well protected during use; typically, a layer of epoxy resin is applied to the surface of the torsion bar spring, wrapped with a layer of fiberglass cloth, coated with another layer of epoxy resin, and finally coated with asphalt and anti-rust paint to prevent collision, scratching, and corrosion, thereby extending the service life of the torsion bar spring.

atv elmer spring structure

The torsion bar spring itself is a torsion bar made of spring steel. The cross-section of the torsion bar is usually circular, with a few being tubular or rectangular. The shapes of its two ends can be made into splines, square, hexagonal, or cylindrical with flat surfaces, so that one end is fixed to the frame and the other end is fixed to the suspension swing arm, which is connected to the wheel.

atv elmer spring structure and principle

The torsion bar spring itself is a torsion bar made of spring steel. The cross-section of the torsion bar is usually circular, with tubular and rectangular shapes being less common. Its ends can be shaped as splines, square, hexagonal, or cylindrical with flat surfaces, so that one end can be fixed to the vehicle frame and the other end to the suspension arm, which is connected to the wheel. One end of the torsion bar spring is fixed to the vehicle frame, while the other end is connected to the wheel via the suspension arm. When the wheel encounters an obstacle on the ground and bounces upward, it drives the suspension arm to rotate around the axis of the torsion bar by a certain angle, causing the torsion bar to undergo torsional deformation (elastic deformation). At the same time, the elastic energy stored in the torsional deformation of the torsion bar is released when the wheel leaves the obstacle, allowing the force transmission mechanism and the wheel to quickly return to their original positions. During the manufacturing of torsion bar springs, the torsion bar is pre-twisted to create a permanent torsional deformation, giving it a certain amount of prestress. The direction of the pre-applied twist is the same as the direction of twist during operation on the vehicle, with the aim of reducing actual stress during use and extending its lifespan. Note that left and right torsion bars cannot be interchanged.

atv elmer spring features

Suspensions using torsion bar springs are lighter in weight, have a simpler structure, and do not require lubrication. By adjusting the installation angle of the fixed end of the torsion bar spring, automatic adjustment of vehicle body height is easily achieved. Torsion bar springs store a large amount of elastic energy per unit volume and have low mass. Compared with coil springs, torsion bar springs have a compact structure and are easy to arrange. Torsion bar springs are more commonly used in off-road vehicles, light buses, and trucks. According to their cross-sectional shape, torsion bar springs can be divided into circular, tubular, and leaf types. Circular solid torsion bars have a simple structure and are the most widely used. To assemble the torsion bar, its two ends are machined into splines, hexagonal, square, etc. Since the spline head size is 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 according to GB3478. The JSB2705 standard recommends a standard pressure angle of 45° for splines, with modules of 1mm and 0.75mm. To facilitate the assembly of torsion bar springs, some designs make the spline diameters at both ends unequal or machine a blind tooth on the spline teeth at both ends.

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