柱デリックの英語

鉄塔の解体又は組立に広い作業敷地を必要とせず、鉄塔の主柱材で囲まれたスペース内で前記主柱材に係止して解体、組立作業ができ、作業のため構成部材を鉄塔内で組立可能、かつ、シンプルな構成で経済的なコストで製作でき、作業効率のよい簡易組立式デリックを得る。例文帳に追加

To provide a simple assembly type derrick in which no wide working site is required in disassembly or assembly of a steel tower, the disassembly and assembly works can be executed by locking the steel tower to main pillars in a space surrounded by the main pillars, constitution members for the work can be assembled, the constitution is simple at economical cost, and the working efficiency is excellent. - 特許庁