Hydraulic percussive machine

Details Hydraulic percussive machine Hydraulic percussive machine

1975-09-18

1978-01-24

Purser, Ernest R.

Tool driving or impacting

Impacting devices

With means to cause or control advance of hammer head

91231, 91341R, 173 73, 173 80, E21C 112

Patent

active

040698769

ABSTRACT:
A machine having a housing wherein are arranged a stepped hammer piston adjoining the front portion of the machine and a stepped plunger adjoining the rear portion of said machine, said hammer piston and plunger being adapted for an axial movement in said housing. The hammer piston and the plunger are separated by resilient means. The pressure fluid fed into the housing provides for reciprocation of the hammer piston and the plunger. The hammer piston reciprocations consist of forward and return strokes. During the forward stroke the hammer piston transmits impacts to the tool. The presence of the hammer piston and the plunger with the resilient member in between increases the power of the hammer piston impacts transmitted to the tool, hence the machine efficiency. The machine may be advantageously used as a hydraulic hammer (quartering hammer) and a hydraulic percussive device for making holes and deep wells in soil.

REFERENCES:
patent: 1605713 (1926-11-01), Gilman
patent: 2937619 (1960-05-01), Kurt
patent: 3095046 (1963-06-01), Mori
patent: 3162251 (1964-12-01), Bassinger
patent: 3692122 (1972-09-01), Curington

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