Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Repair – replacement – or improvement
Patent
1980-04-14
1982-01-19
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Repair, replacement, or improvement
299 1, 405143, F16L 100
Patent
active
043114113
ABSTRACT:
A pipe jacking apparatus comprises a shield type tunneling machine equipped with direction adjusting jacks, a tubular body joined to the rear of the shield type tunneling machine, and a thrust jack provided within a thrust pit and thrusting forward a pipe member placed between the shield tunneling machine and the thrust jack, in cooperation with the shield type tunneling machine. The aforesaid tubular body includes a panel therein having output gages for the aforesaid jacks and a mark representing the center of the tubular body, and a TV camera for taking a picture of the panel. This TV camera is connected to a TV receiver provided in a remote control unit. In the aforesaid pit, there is provided an optical unit having a line of collimation directed to a predetermined direction to thrust a pipe, or a light source for light beams. A pipe is driven forward while a discrepancy between the line of collimation or the light beam and the center mark is being eliminated by remote-controlling the outputs of the aforesaid jacks. This apparatus is particularly fit for use in laying a diametrically small sewer pipe in the ground.
REFERENCES:
patent: 3356167 (1967-12-01), Trent
patent: 3498673 (1970-03-01), Ledray et al.
patent: 3517966 (1970-06-01), Montacie
patent: 3560753 (1971-02-01), Beug
patent: 3907045 (1975-09-01), Dahl et al.
patent: 4020641 (1977-05-01), Takada
patent: 4072021 (1978-02-01), Yamazaki
patent: 4238828 (1980-12-01), Hay et al.
Akesaka Toshio
Hada Takeshi
Kabushiki Kaisha Aoki Kensetsu
Kabushiki Kaisha Iseki Kaihatsu Koki
Taylor Dennis L.
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