ARM FOR EXCAVATION MACHINE

摘要

Costs and man hours for producing an arm that forms a work machine for an excavation machine are reduced. The arm (20) for the working machine (10) is installed on an upper rotation body (30) so that it can swing in the left-right direction, and the upper rotation body (30) is supported at the center on the upper part of a crawler type travel device (40). The arm (20) has an arm support point section (21), a bucket support point section (24), and a bucket cylinder bottom support point section (22), and these sections are integrally cast. The arm support point section (21) and the bucket support point section (24) are connected by a general-purpose rectangular tube (28). The bucket cylinder bottom support point section (22) is fixed to the upper surface of the rectangular tube (28).