Stopper apparatus for rotary reaction force

Details Stopper apparatus for rotary reaction force Stopper apparatus for rotary reaction force

1989-07-10

1991-01-15

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

Columnar structure

173163, 175171, 405233, E02D 1100

Patent

active

049849360

ABSTRACT:
A stopper apparatus for neutralizing rotary reaction force set up by the rotation of a casing in an all-casing driver, comprises a long transmission frame for transmitting the reaction force, including a base frame connected to a casing drive unit and a joint frame one end of which is connected to the base frame, and a support frame horizontal- and vertical-rotatably connected to the other end of the joint frame. At least one side of the support frame comes in contact with a supporting mass by which the reaction force is supported. The stopper apparatus also comprises a pedestal for placing a working wagon thereon, detachably connected to the transmission frame, an inclination device for raising the pedestal to an inclined position, and an inter-frame distance increasing device for increasing the wedge of the pedestal.

REFERENCES:
patent: 1971922 (1934-08-01), Smith
patent: 3470701 (1969-10-01), Turzillo
patent: 3557885 (1971-01-01), Cales
patent: 3595322 (1971-07-01), Reimann
patent: 3645343 (1972-02-01), Mays
patent: 3756330 (1973-09-01), Russell
patent: 4126193 (1978-11-01), Brown
patent: 4221269 (1980-09-01), Hudson
patent: 4719978 (1988-01-01), Klemm

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