To provide a counterweight device that is low in cost and makes it easy to visually recognize the total mass of counterweights.SOLUTION: A counterweight device is mounted on a crane, and comprises: a plurality of counterweights; a base on which the plurality of counterweights are vertically arranged in a stack; and an indicator abutting on the counterweights from a side. The indicator has: an extending/shortening portion that extends/shortens outside the plurality of counterweights; and a sheath portion accommodating the extending/shortening portion such that the extending/shortening portion can project in the direction of the stack. The difference between the distance to the leading end of the sheath portion and the distance to the leading end of the extending/shortening portion, with the base as a reference, increases according to the number of the counterweights arranged in a stack.SELECTED DRAWING: Figure 3
【課題】本発明は、低コストでカウンタウェイトの総質量を視認し易いカウンタウェイト装置の提供を目的とする。【解決手段】本発明は、クレーンに搭載されるカウンタウェイト装置であって、複数のカウンタウェイトと、上記複数のカウンタウェイトを垂直に積み重ねるベースと、上記複数のカウンタウェイトに側方から当接する表示器とを備え、上記表示器が上記複数のカウンタウェイトの外側で伸縮する伸縮部と、上記伸縮部を上記積み重ね方向に突出可能に収容する鞘部とを有し、上記ベースを基準とした上記鞘部の先端までの長さと上記伸縮部の先端までの長さとの差が上記カウンタウェイトの積み重ね数に応じて大きくなる。【選択図】図3
COUNTERWEIGHT DEVICE
カウンタウェイト装置
15.02.2021
Patent
Elektronische Ressource
Japanisch
IPC: | B66C Krane , CRANES |
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