Taphole opening apparatus for blast furnaces

Details Taphole opening apparatus for blast furnaces Taphole opening apparatus for blast furnaces

1980-09-03

1983-03-29

Reynolds, W. Carter

Tool driving or impacting

Convertible

173 48, 173132, 173133, 266272, B25D 906, B25D 1708, B23B 4100

Patent

active

043780547

ABSTRACT:
The operator of a taphole drilling apparatus for blast furnaces performs manual changes on the apparatus in its safe position of rest and operation by remote control and automatic latching in hazardous taphole work including drilling and subsequent driving, release, and extraction of a tap bar. The usual guide rail (22) carrying reciprocably a hammer drill (30) thereon incorporates a remotely openable automatically latching centralizer (42) at its forward end and an extraction carriage (29) on which, after removal of the drill steel (43), an impact sleeve (50) can be manually mounted for being impacted by the hammer drill (30). In one mounting position (FIG. 5) of the impact sleeve (50), a latch (57) therein is biased to automatically latch the shank of a tap bar (53) thereto for extraction by impacts. In a 180.degree. counter-turned position the latch (57) will fall aside and the mounted sleeve (50) is used to drive the tap bar while guided by the centralizer (42). The sleeve (50) can then be retracted freely from the tap bar (53) and the guide rail (22) freed by unlatching the centralizer (42) from the tap bar (53).

REFERENCES:
patent: 273443 (1883-03-01), Bittenbender et al.
patent: 911755 (1909-02-01), Pfouts
patent: 1055594 (1913-03-01), Arnott
patent: 1595064 (1926-10-01), Barrett
patent: 1977645 (1934-10-01), Roberts
patent: 2035156 (1936-03-01), Hale
patent: 2293443 (1942-08-01), Mossberg
patent: 3845826 (1974-11-01), Beisch
patent: 4057234 (1977-11-01), Brucher et al.

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