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MessagePosté le: Mer 30 Nov - 07:42 (2016)    Sujet du message: smell of wood flooring Répondre en citant

Tire roller: the advantage of good mobility, ease of transport, the whole work stress compaction time, and the pressure of the material contact area, and the role of the buffer, the compaction effect is better, adjust the tire pressure can adapt to different Of the operating requirements, so a wide range of applications. Under normal circumstances: Tire drive single drum roller for soil-based, cushion, the compaction of the primary; Double-drum rollers and tire rollers are used for compaction of asphalt pavements amplitude The maximum distance that a vibrating object will leave the center. In the case of a vibratory roller, it represents the height at which the steel wheel is lifted by the exciting force in a free state. On the whole hydraulic double-driven vibratory roller: the wheel is involved in compaction, but also involved in walking drive, so the wheel load can be designed large, generally accounted for 60 to 70% of the weight of the whole, to participate in compaction of the weight of its compaction Of course, good results. On mechanical single-drive vibratory roller: steel wheels only involved in compaction, do not participate in walking drive, so the wheel load can not be designed great, generally only about 50% of the weight of the whole, to participate in the compaction of the compact The effect is poor. Full hydraulic dual drive is the steel wheels and tires are hydraulic drive; and hydraulic single-drive is a steel wheel hydraulic drive walking. ?Compaction work is the vibratory roller vibratory wheel on the ground action force, this action force and the exciting force of the roller is two completely different forces, there is no relationship between them. It is related to the amplitude and frequency of the roller and the physical and mechanical properties of the soil, and is random. The excitation force only with the vibratory roller itself parameters, can be calculated, but can not detect. The world's top three sales of the famous roller DYNAPAC Sweden, Germany BOMAG, the United States INGERSOLLAND 18-ton full hydraulic vibratory roller the data come to the conclusion: the general maximum exciting force (equivalent to the excitation frequency of 27Hz) is about equal to the wheel Load 2.09 ~ 2.51 times, and with the wheel load weight ratio of total switchboard , The greater the ratio of the wheel load to the switchboard weight, the smaller the exciting force (based on this ratio can be calculated at other frequencies of the exciting force value). In order to meet the climbing capacity, based on the maximum increase in wheel load, the general wheel load of 67% to 69% of the total weight, or at least 64%, at this time the best compaction. In the design process, due to various reasons, many models of steel wheel load are too small, to make up for this congenitally deficient, but to increase the exciting force, so give users a misunderstanding caused by understanding. The above data indicate that a large wheel load + a suitable excitation force (rather than too much) produces a good compaction effect. driveway sealing crack filling pouring asphalt road machine steel drum rollers for sale dashboard crack sealer
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MessagePosté le: Mer 30 Nov - 07:42 (2016)    Sujet du message: Publicité

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