A rubber-tired roller to the compaction of a ground, specifically for asphalt compaction, using a machine frame, a drive engine, a chassis driven by said drive engine having a front chassis part and a rear chassis part, at least one chassis part comprising at least two wheels with running surfaces, which are arranged next to one another, at least one sprinkler method for the tires of the chassis part, which can be configured to apply a liquid partitioning agent to the running surfaces of their tires, and a control unit for controlling the heating system, wherein a temperature sensor is supplied which is configured and arranged such that it determines the temperatures of at least one tire, in particular the running surface of said tire. The invention also relates to a method for controlling a sprinkler system of such a rubber-tired roller.
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\n Generic rubber-tired rollers are generally utilized for ground compaction and specifically for asphalt compaction in road building. They are self-propelled machines which generally incorporate a system frame, a drive engine and a chassis drivenby the drive engine with a front chassis part and a back chassis part. Typically, at least one chassis part includes at least two wheels with running surfaces, which are arranged next to one another. The tires are typically made from an elastic material,for instance a rubber material. The elastic components of the tires traveling across the earth lead to a kneading or flexing effect, due to the use of generic rubber-tired rollers leads to a particularly effective pore seal at the surface of thelayer to be compacted.
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\n Especially in street building, it’s a standard practice that the rubber-tired rollers travel across the asphalt material to be compacted while the latter is still hot. Due to the growing temperature, the viscosity of the binder portions ofthe asphalt layer, for instance the bitumen, is still low enough, so that a sufficient compaction can be achieved. Since the temperature of the asphalt decreases, but it becomes more viscous and thus more difficult to streamlined. It is a known problem in asphaltcompaction with rubber-tired rollers that the hot asphalt substance adheres to chilly tires of this rubber-tired roller on account of the land described above. It therefore frequently occurs, particularly at the start of the functions once the tires are stillsignificantly colder than the asphalt stuff, that asphalt substance sticks to the rubber wheels, which may cause unevenness of the finished asphalt layer. The tires subsequently heat up in the class of the functions until the temperature gap between thetires along with the asphalt material is so small that the substance does no longer stick to the tires.
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\n To counteract the adherence of material to the tires, it is understood, on the one hand, to provide strippers at the rubber tires which eliminate adhering asphalt material mechanically. Moreover, it is known to employ a sprinkler system for your tireswhich is configured to employ a liquid partitioning agent, for instance a solvent-free water-dilutable separating agent, to the running surfaces of the tires. A control device for controlling said sprinkler system is typically also supplied. By wetting thetires with stated separating agent, adherence of the asphalt material can be avoided from the beginning. This, however, requires the rubber-tired roller to carry large amounts of the separating agent. Additionally, the separating agent needs to be refilledonce the source carried from the rubber-tired roller was drained. The aim is therefore to employ the separating agent to the running surfaces of the tires as economically as possible and just if it is really necessary.
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\n To be able to minimize the consumption of dividing agent in clinic, the operator of this rubber-tired roller thus must estimate or track at which time there’s not any longer a danger of adherence of the asphalt material to the tires. Once thetires are heated sufficiently, the sprinkler system can be switched off. If that is done too early, there’s a danger that the asphalt coating is ruined by the elimination of pieces adhering to the tires. On the flip side, if the operator turns thesprinkler system away too late, this also leads to an unnecessary consumption of dividing agent. To provide the operator an indication for controlling the sprinkler system, it’s known in the prior art to determine the temperature of the floor. Thisenables the operator to estimate how long he must process the floor until the tires have heated up sufficiently. In spite of all the measurement of the floor temperature, but the decision of this operator to turn the sprinkler system offremains very subjective, so that there is still the probability of harm to the asphalt coating on the 1 hand and unnecessary consumption of dividing agent on the other hand.
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IP reviewed by Plant-Grow agriculture technology news
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