Solutions involving machine and application technology since bauma 2019

Remote-controlled compactor

Across the world, there are more and more projects for which the compactors can be operated by remote control only, in order to protect the machine operator. For these cases, HAMM has developed a remote control and therefore moved the driver's platform to the outside. As a result, all of the functions of the compactors in the H series can be activated and operated from a safe distance. The drivers receive all of the information that is required to work safely and to a high quality. For this, the large display on the remote control displays the direction of travel and speed, in addition to the usual information. The driver also sees the operating data from the drum and engine. A remote-controlled roller has been in permanent use in the recultivation of the Wilhelmsglück quarry in Southern Germany since 2019. The 20 t compactor from the H series fills and compacts the quarry there using material from various construction measures. Once compaction has taken place along the rock face, which has a height of 35 m, there is a risk that the vibrations will cause stones to come loose from the face and fall onto the roller. The remote control can also be used in the area immediately in front of the break-off edge to safely compact to a high level of quality without personnel having to remain in the cab and therefore in the danger zone.

C models

In all markets, customers are using their compactors in quarries and on rough terrain. HAMM has developed the "C models" for these types of application. These machines are fitted with a reinforced hydrostatic drive and provide up to 30% more drive torque. This means that their traction and gradability are even better than that of the standard models, enabling them to work on inclines in excess of 60%. The additional power is also impressively noticeable when working with the dozer blade. They remain economical here: Fuel consumption in the C models is almost identical to that in models without reinforced drives because all rollers have the same diesel engine. When compacting in a quarry near Stuttgart, the C version of an H 20i quickly proves its worth. The compactors complete two tasks: They compact and, at the same time, move heaped material using a dozer blade. With the reinforced drive, this is also no problem in the long run.

Diesel-powered tire heating

In some regions, tire heating is a must for pneumatic-tire rollers in order to compact to a high level of quality since the heated tires prevent the asphalt from adhering to the tires. Furthermore, the heating can also expand the area of application since, with heated tires, the roller can also be used on asphalts that are difficult to compact or asphalt mixes that cool quickly. For a long time, gas cylinders for heating were customary in the industry. HAMM now offers diesel-driven heating for the HP 180i and HP 280i models. The advantages are clear: On the one hand, the tires are consistently kept at the required temperature in a sensor-controlled process. On the other hand, there is no need to procure and handle gas cylinders, which therefore also removes the safety risks. Finally, this also makes it easier to transport the rollers.

Pneumatic-tire rollers: New models, optimized additive sprinkling and Easy Drive

HAMM added an additional model to complete the HP series pneumatic-tire rollers in 2020. The new HP 180i, with an operating weight between 8.2 t and 17 t (depending on the ballasting), meets the requirements of the European and North American markets. Furthermore, the additive sprinkling has been further optimized for all machines: The additive concentrate is filled easily without any premixing. The roller automatically doses and mixes the additive during the compaction in accordance with the specification. The addition can be flexibly controlled from the driver's platform. From the outset, HAMM therefore prevents the additive-water mixture from decomposing. Furthermore, it is therefore possible to convert the sprinkling from water to additive at any time. There was also something new on the pneumatic-tire rollers in terms of operation: Now the models in this series with engines in accordance with EPA Tier 4/EU Stage V are also equipped with the Easy Drive operating concept. This makes it particularly easy, safe and convenient to operate all of the rollers since HAMM has designed the dashboard, including display, the joystick and a multifunction armrest, in such a way that they are language-neutral in all Easy Drive rollers and look almost identical, except for a few, machine-specific functions. For example, identical colors are used on buttons and operating elements in all Easy Drive machines to indicate that they belong to the same functional groups. The switches or buttons for identical functions are also always positioned in the same place in the driver's platform. This makes it extremely easy to switch from one machine type to another. This also increases safety since Easy Drive allows each driver to respond quickly and correctly without any previous knowledge.

2-in-1: HD 14i TT compact pneumatic-tire roller

In addition to the pneumatic-tire rollers in the HP series, HAMM also has a "little sister" in the range: The HD 14i TT, a compact pneumatic-tire roller for the EU Stage V/Tier 4 markets. This articulated compact roller has undergone a facelift and, as with the models in the HP series, it fulfills the new, strict requirements of the "Field of view standard" DIN EN 474. HAMM therefore offers even greater safety on the construction site as well as a better view of the surface that is to be compacted. With a max. operating weight of around 4 t and a working width of 1276 mm, the HD 14i TT is suitable for repair work and for compacting small paths and surfaces. It shows its strengths wherever asphalt has to be gently compacted or pressed without vibration. Thanks to the compact dimensions, compaction can also be effortlessly carried out in extremely narrow spaces. Added to this is a large side clearance, meaning that the HD 14i TT can compact right to the edge on curbs and low walls. Its economic, quiet drive is also impressive.