Rotation-type construction machine

摘要

To provide a swing-type construction machine that can reduce force of working device pipes which is generated in accordance with swinging of a working device and presses against a side wall of a swing post. The present invention is configured such that a swing frame side holding body for holding a part of working device pipes 21, which is located at a side of a swing frame 2a, includes a first clamp 22 having a first stage holding portion that clamps one of the group of the working device pipes and a second stage holding portion that is arranged on a position lower than the first stage holding portion and clamps the other group of the working device pipes, while a swing post side holding body for holding a part of the working device pipes 21, which is located at a side of a swing post 6, includes a second clamp 24 having a first stage holding portion that clamps the group of the working device pipes that are clamped, by the first stage holding portion of the first clamp 22 and a second stage holding portion that clamps the group of the working device pipes that are clamped by the second stage holding portion of the first clamp 22.

主权项

1. A swing construction machine comprising:
a working device including a plurality of hydraulic actuators; a swing cylinder that swings the working device in a horizontal direction; a swing post that is rotatable in a horizontal direction and on which the working device is mounted; a bracket that is connected to the swing post via a vertically extended connecting pin; an upperstructure having a swing frame on which the bracket is fixed; a control valve that is arranged on the upperstructure; a plurality of working device pipes that connect the control valve with corresponding ones of the plurality of hydraulic actuators; a swing frame side holding body that holds a part of the plurality of the working device pipes which is located at a side of the swing frame; and a swing post side holding body that holds a part of the plurality of the working device pipes which is located at a side of the swing post, the swing post having a horizontal hole into which the plurality of the working device pipes are inserted and is arranged on a position of an opposite side of a swing cylinder across from the connecting pin; and the plurality of the working device pipes being arranged such that they extend along a horizontal direction between the swing frame side holding body and the horizontal hole of the swing post, and when inserting the plurality of the working device pipes into the horizontal hole of the swing post, the plurality of the working device pipes are inserted therein so as to wrap around the connecting pin, and at a position upper than a position where the plurality of the working device pipes are inserted into the horizontal hole of the swing post, an extending direction of the plurality of the working device pipes is reversed, and in the reversed state, the plurality of the working device pipes are clamped by the swing post side holding body so that the plurality of the working device pipes extend upwardly thereafter, wherein, the swing frame side holding body is configured by a first clamp that is provided with a plurality of stages of holding portions including a first stage holding portion and a second stage holding portion, and the plurality of the stages of the holding portions respectively clamp corresponding pipes of the plurality of the working device pipes, the swing post side holding body is configured by a second clamp having a first stage holding portion for clamping the plurality of the working device pipes that are clamped by the first stage holding portion of the first clamp and a second stage holding portion for clamping the plurality of the working device pipes that are clamped by the second stage holding portion of the first clamp, the first clamp is configured by a rubber piece and a holding metal fitting, the rubber piece of the first clamp is provided with holes that constitute the first stage holding portion and the second stage holding portion of the first clamp and the holes into which the plurality of working device pipes are inserted are arranged in a row in a horizontal direction, the holding metal fitting of the first clamp holds the rubber piece of the first clamp so as not to expand the rubber piece of the first clamp, the second clamp is configured by a rubber piece and a holding metal fitting, the rubber piece of the second clamp is provided with holes that constitute the first stage holding portion and the second stage holding portion of the second clamp and the holes into which the plurality of working device pipes are inserted are arranged in a row in a horizontal direction, and the holding metal fitting of the second clamp holds the rubber piece of the second clamp so as not to expand the rubber piece of the second clamp.