Road structure – process – or apparatus – Apparatus – Sheep foot roller
Patent
1986-03-19
1989-08-08
Massie, IV, Jerome W.
Road structure, process, or apparatus
Apparatus
Sheep foot roller
404124, 404128, 404 72, 296187, E02D 3026
Patent
active
048547727
DESCRIPTION:
BRIEF SUMMARY
The Invention relates to a Method to manufacture such compactors in different sizes that are meant to be used e.g. on dumping sites for crushing refuse and for compacting the base i.e. the refuse layer, or e.g. coal fields for levelling coal stacks and for compacting the surface layer, or for some other kind of compacting tasks, the main parts of such compactors being chassis, engine and drum, the preferable number of which is two, and power transmission assembly to transmit the rotary motion to one or more drums, and according to which manufacturing method the compactors are mainly assembled of the afore mentioned and of other prefabricated parts i.e. modules.
It a well-known fact that in the maintenance of e.g. dumping sites the most preferable method is to use specially made compactors equipped with spiked wheels to crush and compact the refuse as efficiently as possible. By using these special compactors several other advantages are reached compared with results achieved through other equipment. Firstly, the dumping site is used optimally: as the refuse is compacted into a smaller space, the dumping site does not need to be extended unnecessarily. Further, by compacting the refuse the living conditions of a vermin and noxious animals are eliminated, the danger of fire is reduced essentially and the need for covering material is reduced. The utility life of the dumping site is extended and the moving of the vehicles bringing the refuse is facilitated owing to the even, well-compacted surface of the dumping site.
Practice has shown that dumping sites are of different sizes and require compactors of various sizes. This is because the dumping sites of large cities have to be able to take thousands of tons of refuse every day, whereas smaller towns only produce some tens of tons of refuse, one hundred tons at the most. When communities started to build controlled dumping sites, in some countries, such as Finland, several communities jointly built a dumping site for common use. In this way the dumping sites could be made sufficiently large to enable the use of special equipment. As even in these cases the preferable distance between dumping sites is less than 50 km, smaller sites develop next to the big sites, especially in big cities.
The smaller dumping sites traditionally use appro. 100 h.p. compactors, which can handle about 20-60 tons of refuse per hour. Large dumping sites use 400 or more h.p. compactors, whose capacity is more than 200 tons per hour. As the sizes and capacities of compactors vary so greatly, they are built to suit the purpose, i.e. almost each part of the compactor is dimensioned in a different way depending on the size of the compactor.
The purpose of this Invention is to produce a new, more efficient and favourable method of manufacturing compactors, a new type of compactor manufactured using this method and a compactor series based on the method.
A suitable surface pressure of the drums for rolling and compacting has been chosen as the dimensioning unit for the new compactor. As the feet or spikes attached to the surface of the drum make it difficult to determine the surface pressure and as a cylinder-shaped drum has only a narrow touch with an even surface, the surface pressure has, for the sake of simplicity, been replaced by the ratio of the weight of the compactor to the unit of width of the drum. With a compactor, this dimensioning basis can be reached by dividing the weight of the compactor by the combined width of both the drums. Therefore, to make the weight of each compactor of the compactor series per the unit of width of the drums the same, the total rolling width of the lightest compactor is the narrowest and the total rolling width of the heaviest compactor is the wildest. In practice the optimum weight of the compactor per unit of width, calculated in the above way, is 4-5 tons. Practice has also shown that the power requirement of a compactor is about 10 hp/ton, which means that a compactor weighing 10 tons requires an engine of about 100 h.p. and correspondingly a c
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Massie IV Jerome W.
Smith Matthew
Tana Jyra Ky
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