CUTTING DEVICE

• Main Authors: HORINAKA TOSHIHARU, MAKINO SHOJI, HORIKAWA EIJI, NITTA TOMOHIRO, MORITA HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 17.03.2016
• Subjects: CESSPOOLS; FIXED CONSTRUCTIONS; SEWERAGE; SEWERS; WATER SUPPLY

PROBLEM TO BE SOLVED: To provide a cutting device capable of easily and safely removing an existing structure by reducing labor and by shortening a construction period.SOLUTION: A cutting device is provided in a hollow existing structure 3 composed of reinforced concrete, and cuts the existing structure 3, and includes a base 2, a cutting edge assembly 6 having a cutting edge member 5 having an edge part 4, cutting edge driving means 7a and 7b for advancing and retreating the cutting edge assembly 6, a pair of arm part support bodies 9a and 9b movable in the overhang direction B1 and the pull-in direction B2 for separating to the side from the base 2, a reaction receiving support body 11 having a reaction receiving surface 10 capable of contacting with an inner surface 3a of the existing structure 3 and arm part driving means 60 for moving the respective arm part support bodies 9a and 9b in the overhang direction B1 and the pull-in direction B2.SELECTED DRAWING: Figure 1 【課題】 工期を短縮し、労力を削減して、容易かつ安全に既設構造物を撤去することができる切断装置を提供する。【解決手段】 鉄筋コンクリートから成る中空の既設構造物３内に設けられて、既設構造物３を切断する切断装置であって、基台２と、刃先部４を有する切刃部材５を備える切刃組立体６と、切刃組立体６を前進させかつ後退させる切刃駆動手段７ａ，７ｂと、基台２から側方に離反する張出し方向Ｂ１および引込み方向Ｂ２に移動可能な一対の腕部支持体９ａ，９ｂと、既設構造物３の内面３ａに接触可能な反力受け面１０を有する反力受け支持体１１と、各腕部支持体９ａ，９ｂを張出し方向Ｂ１および引込み方向Ｂ２に移動させる腕部駆動手段６０とを含む。【選択図】 図１