CONSTRUCTION METHOD OF SCAFFOLD IN BOILER

• Main Authors: TANAKA KENJI, ANDO YUSAKU
• Format: Patent
• Language: English; Japanese
• Published: 05.02.2015
• Subjects: BLASTING; BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING; STEAM BOILERS; STEAM GENERATION; WEAPONS

PROBLEM TO BE SOLVED: To provide a construction method of a scaffold in a boiler capable of drastically shortening construction period of a scaffold in a boiler.SOLUTION: In a construction method of a scaffold in a boiler for constructing an inner boiler scaffold in a boiler main body 1 in a boiler in which a water tube nose part 2 is formed, a suspended elevation operation floor 7 is constructed on a lower operation floor 4 constructed on an upper part of a boiler hopper 3, then with a jack device 6, the suspended elevation operation floor 7 is elevated to just below the water tube nose part 2, in addition, a lower scaffold 5 is constructed between the lower operation floor 4 and the suspended elevation operation floor 7 elevated to just below the water tube nose part 2, and simultaneously with the construction of the lower scaffold 5, an upper scaffold 8 is constructed above the suspended elevation operation floor 7. The lower scaffold 5 is constructed with an elevating device comprising a must 11 with a rack, a pinions meshing with the rack and driving means rotating the pinion. 【課題】ボイラ内足場の工期を大幅に短縮することができる、ボイラ内足場の構築方法を提供する。【解決手段】水管ノーズ部２が形成された、ボイラのボイラ本体１内にボイラ内足場を構築する、ボイラ内足場の構築方法において、ボイラホッパ３の上部に構築された下部作業床４上に吊り下げ式昇降作業床７を構築し、次いで、ジャッキ装置６により吊り下げ式昇降作業床７を水管ノーズ２部の直下まで上昇させ、そして、下部作業床４と水管ノーズ部２の直下まで上昇させた吊り下げ式昇降作業床７との間に下部足場５を構築し、下部足場５の構築と同時に、吊り下げ式昇降作業床７上に上部足場８を構築し、下部足場５は、ラック付きマスト１１と、前記ラックに噛み合うピニオンと、前記ピニオンを回転させる駆動手段とからなる昇降装置により構築する。【選択図】図１