| 摘要 |
PURPOSE: An earth auger machine is provided to simultaneously or individually supply cement paste and pneumatic pressure using a cement paste supply swivel and a pneumatic pressure supply swivel. CONSTITUTION: An earth auger machine(1) comprises a cement paste supply swivel(17), a pneumatic pressure supply swivel(4), a pneumatic pressure passage(24), a ring shaped passage(44), a connection passage, a cement paste supply pipe(23), and an expansion portion(29). The cement paste and pneumatic pressure supply swivels are installed on the top end of a main shaft(2) installed on a gear box(14) and simultaneously or individually supply cement paste and pneumatic pressure. The pneumatic pressure passage has a bigger diameter of the cement paste supply pipe and is formed on the center of the main shaft. The ring shaped passage is connected to a pneumatic pressure injection port(43) of the pneumatic pressure supply swivel. The connection passage connects the ring shaped passage and the pneumatic passage to each other. The top and bottom of the cement paste supply pipe is connected to a cover of the pneumatic pressure supply swivel and a center hole of a female joint(25). The expansion portion is connected to a connection hole of the female joint.
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