Structure damper balances 15-Tonner telescopic loader

Due to their variability, the "Tubus" structural dampers from ACE have established themselves as reliable and inexpensive machine elements in a large number of applications, if precise braking is not required. This application in the world's only articulated telescopic wheel loader with a lifting height of 6,90 m, the 9380 T from Schäffer, proves that there are hardly any restrictions.

In terms of optics, small TC134-146-S tube dampers and the giant Schäffer 9380 T telescopic loader do not have much in common: one comes at a weight of slightly more than 1,5 kg, an outer diameter of 134 mm and a maximum stroke from 146 mm for now unimpressive therefore. The others impress at first glance with a maximum weight of 15 t and a lifting height of 6,90 m.

However, both have advantages from different areas: The structural dampers combine very good damping properties at an affordable price. For example, the service life of machine elements made of co-polyester elastomer exceeds that of urethane dampers by twenty times and that of steel springs by five times. At the same time, however, they are significantly cheaper than industrial shock absorbers, which are also suitable for demanding tasks. The telescopic wheel loaders from Schäffer Maschinenfabrik GmbH, on the other hand, combine the overview and power of a wheel loader with the reach and lifting height of a conventional telescopic loader. Equipped with a swinging rear axle, they have a very high level of stability.

This comes into play when the driver working in a centrally positioned cab is traveling in rough terrain and the enormous lifting height of the machine is to be exploited. With pendulum axle, front and rear carriages always move together with best off-road capability. Thus, the heavy rear truck always serves as a counterweight to the lifted load. In addition to the stability of the loader, this results in a high degree of comfort and safety. Another advantage is that when planing and pushing the bucket for a better result can always be charged with the full loader weight.

Structure damper as pendulum limiter

The Teleradlader can fully exploit its advantages with the modern small machine element tube from ACE Stoßdämpfer GmbH. Mounted on the rear axle, the structural dampers serve as pendulum limiters and ensure a high level of safety when steering in, as well as greater stability during loading, especially on uneven terrain. In previous models Schäffer had still set on a steel stop. However, one has been looking for an alternative for some time. The dampers are otherwise z. They are also used in portals such as cranes and convince with their extremely compact design due to their damping properties. In an emergency, these maintenance-free and ready-to-install machine components may be loaded with up to 10.230 Nm. The required spring rate with high restoring force is achieved by the dual concept of this series. Their maximum stroke is limited to 146 mm, which is not noticeable or important when moving in rough terrain. The very good resistance to UV, seawater, chemicals and microbes as well as the temperature range from -40 ° to 90 ° C predestines the tube for this application. Because these telescopic loaders from Schäffer have been developed especially for efficient work in biogas plants, recycling and disposal companies. Richard Bremenkamp, ​​who is also responsible for press relations at Schäffer, was more than taken with the ACE solutions: "The tubes give our loaders even more stability, comfort and safety. We are already planning to use other tube dampers in smaller loaders. "The two companies also want to expand their cooperation in the field of training. So it should be made possible the Schäffer designers to tap the entire, by structure dampers emerging possibilities.

Application-oriented characteristic curves

Potential constructions are manifold: Some require deceleration according to degressive damping characteristics, ie after a high energy intake at the beginning of the stroke, others according to the exact opposite and again others over the entire stroke as constant as possible, ie approximately linear or progressive characteristics.

A big plus of the material Co-Polyester Elastomer of the structure damper is that it can be mixed down in the production and thus adapted to the most diverse requirements. Thus, a model family consisting of six types and 120 individual products has emerged. So far, a large part of all inquiries from the industry is covered. Since ACE sees itself as a solution partner for its customers, the company from Langenfeld in Rhineland also offers numerous special strokes, characteristics, spring rates, sizes and materials to order.

Other applications

And because the little helper, whose name derives from the pipe-like shape, can also be installed as desired, their missions extend to seemingly inexhaustible areas. These range from the above-mentioned gantry facilities in container ports to the wellness areas of swimming pools. While being used as an emergency stopper in one case, they serve in the other to eliminate the impact noise when adjusting the position of couches and to protect the exclusive floor coverings. They are just as much at home in the plunge tanks of vehicle tank test systems as they are individually or stacked on cultivator blades in the agricultural industry. There they help harvesters plow soils without accidents and damage. The possibility of switching the tube in series by simply combining, stacking and screwing makes it even more flexible. In addition, for many designers, they also become attractive due to their optimal energy balance compared to other solutions.

Agritechnica

ACE: Hall 25, Booth G05e
Schäffer: Hall 6, Booth B03