Device for reciprocating motion of a rotating drilling body of a

Details Device for reciprocating motion of a rotating drilling body of a Device for reciprocating motion of a rotating drilling body of a

1982-04-30

1984-06-26

Yost, Frank T.

Tool driving or impacting

Advance causing or controlling means

Driven flexible member causes advance

91509, 91531, 92117R, B23Q 5027, B23Q 5033

Patent

active

044560770

ABSTRACT:
A device for reciprocating motion of a rotating drilling body of a drilling machine in the longitudinal direction of a hole drilled in rock or ground includes two cylinder-piston devices which via chains are connected to a carriage carrying the drilling body and which comprise parallel piston rods, the ends of which are supported by a frame on the machine, and cylinders movable along the piston rods and connected to each other and via the chains also to the carriage. To increase the feeding velocity of the carriage or to increase the force of the carriage one of the cylinders or both cylinders, respectively, are selectively fluid pressurized.

REFERENCES:
patent: 3089550 (1963-05-01), Watson
patent: 3719238 (1973-03-01), Campbell et al.
patent: 3744578 (1973-07-01), Lisenby
patent: 3818801 (1974-06-01), Kime
patent: 3835940 (1974-09-01), Winter, Jr.
patent: 4033468 (1977-07-01), Brown
patent: 4303132 (1981-12-01), Weber

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