Hydraulically actuated tool for mechanically splitting rock-like

Details Hydraulically actuated tool for mechanically splitting rock-like Hydraulically actuated tool for mechanically splitting rock-like

1977-05-09

1978-09-19

Purser, Ernest R.

Mining or in situ disintegration of hard material

Expansible breaking-down devices

Fluid-pressed element

299 20, 299 23, 166177, E21C 3704

Patent

active

041149513

ABSTRACT:
A rock splitter tool is hydraulically actuated by a piston which moves a tapered wedge between feathers mounted at one end in a retaining means. The feathers and wedge, as an assembly, are inserted into a predrilled hole and the wedge is driven forward by the hydraulic piston to move the feathers outwardly to split the rock. The present invention is directed toward providing a hydraulically moved wedge in which the feathers and wear plate portions are retained by a clam shell clamp and retainer which are readily separated and removed to enable an inspection and/or replacement of any damaged apparatus. This clam shell clamp enables existing apparatus to be converted. Auxiliary apparatus utilizing a jack hammer device is also shown as is a hydraulic pulsation developing rotary valve which is adapted to cycle the wedge as it is moved forwardly.

REFERENCES:
patent: 3957309 (1976-05-01), Darda

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