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EXCAVATING APPARATUS AND EXCAVATING METHOD

MIZUTANI MOTOHIKO

Provided are an excavating apparatus and an excavating method which are capable of reducing a shear force to be applied to a fastening member fixedly fastening an excavation blade plate and a chain together. A trench excavator serving as the excavating apparatus is equipped with a cutter post, a chain, a second cutter bit plate, and a shoe bolt. The second cutter bit plate includes a pair of restraint plates disposed on both sides of and across the chain in a width direction of the chain to extend from a reverse surface of a plate body. The pair of restraint plates are configured to be brought into contact with the cutter post along with a circulating movement of the chain and the second cutter bit plate, to thereby restrict the second cutter bit plate from being rotated about an axis extending along a circulating movement direction.

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EXCAVATING APPARATUS AND EXCAVATING METHOD

MIZUTANI MOTOHIKO

Provided are an excavating apparatus and an excavating method which are capable of reducing a shear force to be applied to a fastening member fixedly fastening an excavation blade plate and a chain together. A trench excavator serving as the excavating apparatus is equipped with a cutter post, a chain, a second cutter bit plate, and a shoe bolt. The second cutter bit plate includes a pair of restraint plates disposed on both sides of and across the chain in a width direction of the chain to extend from a reverse surface of a plate body. The pair of restraint plates are configured to be brought into contact with the cutter post along with a circulating movement of the chain and the second cutter bit plate, to thereby restrict the second cutter bit plate from being rotated about an axis extending along a circulating movement direction.

EXCAVATING APPARATUS AND EXCAVATING METHOD

MIZUTANI MOTOHIKO

Provided are an excavating apparatus and an excavating method which are capable of reducing a shear force to be applied to a fastening member fixedly fastening an excavation blade plate and a chain together. A trench excavator serving as the excavating apparatus is equipped with a cutter post, a chain, a second cutter bit plate, and a shoe bolt. The second cutter bit plate includes a pair of restraint plates disposed on both sides of and across the chain in a width direction of the chain to extend from a reverse surface of a plate body. The pair of restraint plates are configured to be brought into contact with the cutter post along with a circulating movement of the chain and the second cutter bit plate, to thereby restrict the second cutter bit plate from being rotated about an axis extending along a circulating movement direction.

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Titel:

EXCAVATING APPARATUS AND EXCAVATING METHOD

Beteiligte:

MIZUTANI MOTOHIKO (Autor:in)

Erscheinungsdatum:

05.04.2018

Medientyp:

Patent

Format:

Elektronische Ressource

Sprache:

Englisch

Klassifikation:

IPC: E02F Baggern , DREDGING

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