To provide a high lift work apparatus capable of easily replacing a lift wire.SOLUTION: A high lift work apparatus has a base 2, a lower mast S1, a middle mast S2, and an upper mast S3. A winch 5 is installed on the lower mast, a lower lift wire Wd from the winch 5 passes through the lower mast top end and through the gap between the lower mast and the middle mast, and its tip is fastened to the lower part of the middle mast via a middle fastener Tm. The base end of an upper lift wire Wu is fixed to the lower mast, the upper lift wire is passed through the middle mast top end and through the gap between the middle mast and the upper mast, and its tip is fastened to the upper mast lower part via an upper fastener Tu. A first opening P1 facing the middle fastener at the bottom of the middle mast when retracted and into which a tool K that performs the fastening releasing work of the middle fastener can be inserted is formed at the bottom of the lower mast, and a second opening P2 facing the upper fastener at the bottom of the upper mast when retracted and into which the tool K that performs the fastening releasing work of the upper fastener can be inserted is formed at the bottom of the lower mast and at the bottom of the middle mast when retracted.SELECTED DRAWING: Figure 1
【課題】 リフトワイヤの取り替えが容易にできるようにする。【解決手段】 基台2、下マストS1、中マストS2及び上マストS3を有し、下マストにウインチ5を設け、このウインチ5から出た下リフトワイヤWdを下マストの上端を経て下マストと中マストの間を抜けてその先端が中マストの下部に中締結具Tmを介して締結する。下マストに上リフトワイヤWuの基端を固定し、この上リフトワイヤが中マストの上端を経て中マストと上マストの間を抜けてその先端が上マストの下部に上締結具Tuを介して締結する。下マストの下部に、収縮時の中マストの下部の中締結具と対向して中締結具の締結解除を行う工具Kを挿入可能な第1開口P1を形成し、下マストの下部及び収縮時の中マストの下部に、収縮時の上マストの下部の上締結具と対向して上締結具の締結解除を行う工具Kを挿入可能な第2開口P2を形成する。【選択図】図1
HIGH LIFT WORK APPARATUS
高所作業装置
2024-01-19
Patent
Electronic Resource
Japanese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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European Patent Office | 2022
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