Hydraulic demolishing rock drill

Details Hydraulic demolishing rock drill Hydraulic demolishing rock drill

1982-04-22

1984-10-02

Meister, James M.

Tool driving or impacting

Drive controlled by relative axial movement of tool

Drive motor controlled

173134, B23Q 500

Patent

active

044742487

ABSTRACT:
Hydraulic breaking down or demolishing rock drill in which there is a stroke only pressing the drill against the surface to be broken down or drilled. The result is a reduced hard work of the operator and a reduced wear of the drill parts. This drill has an axial chamber body made of different cylindrical sectors, in which is sliding a rammer having two cylindrical joint elements of different diameter: the upper having a groove while the lower has an annular band-like piston ring. An intermediate sector of the axial chamber is equipped with a distributing valve for the oil, controlling the various working phases. The drill body is equipped with various oil pipes joining the oil tank with the sectors of the axial chamber, or such sectors altogether. The drill is also equipped with a device regulating the impact frequency.

REFERENCES:
patent: 1037535 (1912-09-01), Richards
patent: 3661216 (1972-05-01), Yamanaka
patent: 4018135 (1977-04-01), Lance
patent: 4149602 (1979-04-01), James
patent: 4231434 (1980-11-01), Justus
patent: 4308924 (1982-01-01), Boguth

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