초록 ▼

A percussion tool usable as part of a single tool impact device or a multi-tool impact device. In each case, the tool is rotatably driven by a high-torque rotary actuator with the tool being longitudinally splined and received within a correspondingly longitudinally splined hollow drive shaft of the

A percussion tool usable as part of a single tool impact device or a multi-tool impact device. In each case, the tool is rotatably driven by a high-torque rotary actuator with the tool being longitudinally splined and received within a correspondingly longitudinally splined hollow drive shaft of the actuator. The tool extends fully through the drive shaft to a rearward end thereof at which is positioned a percussion hammer to provide reciprocating endwise impact to the tool. The tool is held within the drive shaft by a splined lock member which can be rotated between a release position with its splines aligned with the drive shaft splines, and a locked position with its splines misaligned with the drive shaft splines. The device is mountable on a mobile vehicle having an articulated arm. The multi-tool impact devices utilizes six such units in side-by-side relation with the drive shafts of each having a gear which drivable interconnects the shafts to maintain them synchronized and couple them together for the transmission of drive force therebetween.

대표청구항 ▼

A device for breaking apart or forming cuts or holes in a stationary work piece, such as a rock, cement or other hard material, the device being usable with a percussion hammer having a striker movable with reciprocating motion to provide repeated impact, comprising: a tool having a working head at

A device for breaking apart or forming cuts or holes in a stationary work piece, such as a rock, cement or other hard material, the device being usable with a percussion hammer having a striker movable with reciprocating motion to provide repeated impact, comprising: a tool having a working head at a forward end portion, an impact member at a rearward end portion, and a shank extending therebetween; an outer body having a forward end and a rearward end, and having ports for introducing pressurized fluid within said body; a drive member extending within said body and supported for rotation relative to said body within a limited rotational range, said drive member having an interior bore extending fully and generally coaxially through said drive member from a forward drive member end to a rearward drive member end, said drive member bore being sized to receive said tool shank therewithin in generally coaxial arrangement with said drive member, said drive member bore having drive means for transmitting selective rotational drive force from said drive member to said tool as said drive member is selectively rotated within said limited rotational range by the application of fluid within said body through said ports, said drive means permitting substantially unrestricted axial movement of said tool relative to said drive member within a limited longitudinal range, said drive member holding said tool working head positioned at said forward body end exterior of said body to engage the work piece and said tool rearward end portion positioned at said body rearward end, said drive member end for locking said tool against forward removal from said drive member bore while permitting substantially unrestricted reciprocal axial movement of said tool within said limited longitudinal range, said tool being movable axially within said limited longitudinal range to a position whereat said tool rearward end portion is axially endwise impacted by the striker to drive said tool forward when said tool working head is moved into engagement with the work piece; and transmission means, disposed within said body and surrounding said drive member, for converting the selected application of pressurized fluid within said body through said ports into selected clockwise and counterclockwise rotational drive force to said drive member to move said drive member relative to said body within said limited rotational range by a limited first amount in a clockwise direction and a limited second amount in a counterclockwise direction.