Excavator for underground excavating, rotary excavator and underground excavating method

An excavating device, a technology of a rotating body, applied to drilling equipment and methods, driving devices for drilling in boreholes, earthwork drilling and mining, etc.
CN101484657AActive Publication Date: 2009-07-15ε€ζœ¨δΈ€εŠŸ
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ε€ζœ¨δΈ€εŠŸ
Publication Date
2009-07-15

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Abstract

An excavator for underground excavating arranged to perform excavating work with low vibration and low noise. A rotary excavator and an underground excavating method are also provided. The excavator (1) for underground excavating comprises a plurality of bits (42a, ...) having the outside diameter smaller than that of the excavator body (2) and advancing / retracting to / from the excavating side, piston case members (22b, ...) incorporating pistons (61) for applying a hitting force to respective bits (42a, ...) by the energy of working fluid, a section (30) for storing the working fluid being fed to respective piston case members (22b, ...), working fluid circulation passages (352) for allowing the working fluid being fed to respective piston case members (22b, ...) to pass, and a body of rotation (40) provided with a plurality of holes (4a, ...) for allowing the fluid storage section (30) to communicate with the circulation openings (3a, ...) of each working fluid circulation passage (352) in order to feed the working fluid from the fluid storage section (30) to the circulation openings (3a, ...) of the respective working fluid circulation passages (352).
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Description

technical field

[0001] The present invention relates to an excavating device for underground excavation, a rotary excavator, and an underground excavation method.

[0002] Specifically, it relates to an excavation device for underground excavation, a rotary excavator, and an underground excavation method capable of excavating in a low-vibration and low-noise state. Background technique

[0003] In the field of civil engineering or construction, an excavation device called a "down-the-hole hammer" is mainly used for excavation of hard foundations such as rocks, gravel, concrete, etc. A down-the-hole hammer drives an internal piston by supplying compressed air, and moves a hammer head at the tip up and down to perform excavation by such impact (for example, refer to Patent Document 1).

[0004] Patent Document 1: Japanese Unexamined Patent Publication No. 9-328983 ( figure 1 )

[0005] In addition, there is also a so-called auger, which is an excavating device that digs a h...

Claims

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