Apparatus for maintaining axial alignment between a drop hammer

Details Apparatus for maintaining axial alignment between a drop hammer Apparatus for maintaining axial alignment between a drop hammer

1976-04-30

1977-12-27

Taylor, Dennis L.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

61 53, 173DIG1, E02D 700

Patent

active

040647021

ABSTRACT:
A submersible pile driving apparatus includes a drop hammer 7 reciprocably mounted in a guideframe on vertical posts 8. Either the drop hammer or the guideframe is guided on cables 4 secured to a crossbar 5 attached to the pile 6, and the guideframe is suspended from the surface ship by a rigid column of tube sections 10 or the like to which the guideframe has been rigidly connected. The apparatus is provided with a guide sleeve 12 or 13 having a funnel-shaped mouth to center the pile during descent. The overall arrangement maintains even very long piles in a vertical position during driving, and prevents tilting or tipping at the pile head - drop hammer interface.

REFERENCES:
patent: 26073 (1859-11-01), Whipple
patent: 1598439 (1926-08-01), Hansen
patent: 3053329 (1962-09-01), Fairchild
patent: 3134235 (1964-05-01), Parker et al.
patent: 3345879 (1967-10-01), Nasu et al.
patent: 3869003 (1975-03-01), Yamada et al.

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