Abstract

A hydraulic impact hammer having a hammer housing and a hydraulic piston. The hammer housing has means for attaching a hydraulic rotator converter which has a hydraulic rotator for rotating a drill bit for drilling holes on a surface while the drill bit receives pounding action from the piston. The drill bit has surface portions dimensioned to mate with bushing assembles and a cutout region to loosely engage with the locking mechanism in the hammer housing. After the holes are drilled, the converter is released from the hammer housing so as to allow a hammer tool with a larger diameter to be used for pounding over the holes. The hammer tool also has surface portions dimensioned to mate with the bushing assembles and a cutout region to engage with the locking mechanism so that the hammer tool can receive pounding action from the piston for pounding over the holes.

IPC Classes  ?

• E21B 6/04 - Separate drives for percussion and rotation
• B25D 16/00 - Portable percussive machines with superimposed rotation
• B25D 9/12 - Means for driving the impulse member comprising a built-in liquid motor
• B25D 17/06 - Hammer pistonsAnvils
• B25D 9/04 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously of the hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
• E21B 6/00 - Drives for drilling with combined rotary and percussive action
• B25D 17/00 - Details of, or accessories for, portable power-driven percussive tools

Abstract

A hydraulic rotator converter for attachment to a hydraulic impact hammer having a hammer housing and a hydraulic piston. The converter has mounting brackets, a rotator housing, posts attached to the rotator housing and attachable to the mounting brackets, a hydraulic rotator assembly including a hydraulic rotator, a rotator wheel driven by the hydraulic rotator, and a rotator plate connected to the rotator wheel, the rotator plate having a central cutout region formed therein, and a rotator drill bit dimensioned to pass through a central cutout region of the rotator plate and to engage with the central cutout region so as to be rotatable by the rotator wheel while allowing the rotator drill bit to move in an axis perpendicular to a longitudinal axis of the drill bit.

IPC Classes  ?

• E21B 7/02 - Drilling rigs characterised by means for land transport, e.g. skid mounting or wheel mounting
• B25D 17/00 - Details of, or accessories for, portable power-driven percussive tools
• B25D 16/00 - Portable percussive machines with superimposed rotation
• E02D 7/26 - Placing by using several means simultaneously
• E21B 49/02 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
• B25D 9/12 - Means for driving the impulse member comprising a built-in liquid motor
• E02D 17/02 - Foundation pits
• E21B 1/02 - Surface drives for drop hammers, e.g. with a cable