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Patent Searching and Data


Title:
ROCK DRILLING DEVICE ALLOWING VARIOUS WORK CONFIGURATIONS
Document Type and Number:
WIPO Patent Application WO/2019/111304
Kind Code:
A1
Abstract:
Provided is a rock drilling device that is configured so that a main component member of the rock drilling device can perform a variety of operations such as a swinging operation, a horizontal revolving operation, an omnidirectional oscillation, a sliding operation, and a rotating operation, thereby allowing various work configurations in which satisfactory rock breaking work is performed by inserting a rock drilling blade quickly and precisely into a drilled hole by matching the direction that the rock drilling blade advances to the circumstances of a rock to be broken. A rock drilling device formed by combining a device main body and a device external body is configured such that the device main body comprises a main cylinder, a wedge provided on an extended portion of a piston rod of the main cylinder, and a pair of freely expanding rock drilling blades that abut the external face at the tip of the wedge, and the device external body comprises an external body case that loosely fits on the device main body so as to freely slide in the axial direction on the outer circumference of the device main body. Furthermore, a device mounting base plate is provided on a bracket end of an arm of a separately provided backhoe for work, the base plate is provided with a projecting tunnel-shaped holder main body that freely rotates about the axis, and the device external body is mounted and supported on the holder main body via a ball joint so as to allow omnidirectional oscillation, thereby making various work configurations possible.

Inventors:
SHIMOMUKAI AKIHIRO (JP)
Application Number:
PCT/JP2017/043534
Publication Date:
June 13, 2019
Filing Date:
December 04, 2017
Export Citation:
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Assignee:
HIRADO KINZOKU KOGYO CO LTD (JP)
International Classes:
E02F9/22; E21B7/02; E21C37/02
Domestic Patent References:
WO2007100284A12007-09-07
Foreign References:
JPS5918895A1984-01-31
JP2001073662A2001-03-21
JPS60173287A1985-09-06
Attorney, Agent or Firm:
MATSUO Kenichiro (JP)
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