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Caterpillar soil compactor equipped with padfoot drum, being used to compact the ground before placing concrete Antique "Kemna" steamroller. A road roller (sometimes called a roller-compactor, or just roller [1]) is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. [1]
Alongside a wide range of internal vibrators for concrete, the company’s product portfolio also covers vibratory plates, rammers, and walk-behind rollers for soil and asphalt compaction. Enar produces its equipment in Zaragoza, Spain. [6]
The plate compactor, vibrating plate, or tamper, has a large vibrating baseplate and is suited for creating a level grade, while the rammer compactor has a smaller foot. The rammer, or trench rammer, is mainly used to compact the backfill in narrow trenches for water or gas supply pipes etc. Road rollers may also have vibrating rollers.
In 1936 the vibratory compactor was developed by a mechanical engineer Hilding Svenson. In 1940 the company name changed to AB Vibro-Verken. In 1947 it launched the first vibratory plate compactor, which weighed 1.5 tonnes, being nicknamed the frog. It opened its research laboratory in 1948 and manufactured the first vibratory road roller in 1953.
Hyster also manufactured a successful line of compaction machinery and road-rollers, including machines for earth compaction, garbage compaction and asphalt compaction. Through the 1960s and 1970s Hyster was a major force in these types of machinery in America and they produced a wide range of models with many successful design concepts.
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