Underwater Pile Driving Hammer with Active Impact Body

Petar Bodurov, Vasil Genchev

Abstract


Consider the hammer to drive the piles under water. In these hammers now used only rises mechanical percussion part and then it falls freely from some height on the drive pile.In the proposed structure of the shock it is driven in the fall on the pilot, ie it is an active percussion part. Moreover, the impact of the hammer does not move in the sealed housing and is in direct contact with the aquatic environment. This solution simplifies the construction of the hammer and makes it suitable for work in all depths. Running the percussion part - in rising and falling, is done by rocket engines. In general it can be used almost all types of rocket engines, but the authors are most appropriate electric rocket engines using for working body the overlying water. Of electric rocket engines are emerging as favorite laser because they seamlessly provide instant water heating in rocket chambers with temperatures of 4,000 to 10,000 ºC and its evaporation. Thus, the proposed hammer will have very simple structure in which only one moving part - the striking part and the supply of electrical energy will be only one wire. Here are the velocities and displacements of the four variants of the mass of the percussion part. These are the advantages of the proposed hammer to drive the piles under water - all possible depths.

Consider the hammer to drive the piles under water. In these hammers now used only rises mechanical percussion part and then it falls freely from some height on the drive pile.In the proposed structure of the shock it is driven in the fall on the pilot, ie it is an active percussion part. Moreover, the impact of the hammer does not move in the sealed housing and is in direct contact with the aquatic environment. This solution simplifies the construction of the hammer and makes it suitable for work in all depths. Running the percussion part - in rising and falling, is done by rocket engines. In general it can be used almost all types of rocket engines, but the authors are most appropriate electric rocket engines using for working body the overlying water. Of electric rocket engines are emerging as favorite laser because they seamlessly provide instant water heating in rocket chambers with temperatures of 4,000 to 10,000 ºC and its evaporation. Thus, the proposed hammer will have very simple structure in which only one moving part - the striking part and the supply of electrical energy will be only one wire. Here are the velocities and displacements of the four variants of the mass of the percussion part. These are the advantages of the proposed hammer to drive the piles under water - all possible depths.


Full Text: PDF DOI: 10.5539/mer.v2n1p81

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Mechanical Engineering Research   ISSN 1927-0607 (Print)   ISSN 1927-0615 (Online)

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