PROBLEM TO BE SOLVED: To provide a reach type forklift and an electric reach cylinder of the forklift, in each of which damage to a ball rolling surface of a ball screw due to impulsive external force can be prevented.SOLUTION: An electric reach cylinder 100A comprises an electric motor 20, a transmission belt 40, a ball screw 30 which moves a mast by a linear motion, and a tension adjustment part 10A which includes an elastic member and adjusts the tension of the transmission belt 40. The tension adjustment part 10A adjusts the tension of the transmission belt 40 by pressing the transmission belt 40 using return operation of the elastic member at a normal time, and absorbs impulsive external force by relaxing the transmission belt 40 using compression operation of the elastic member when the impulsive external force is applied to the ball screw 30.SELECTED DRAWING: Figure 3

    【課題】衝撃的外力によりボールねじのボール転動面が損傷してしまうのを防ぐことが可能なリーチ式フォークリフトおよび当該フォークリフトの電動リーチシリンダを提供する。【解決手段】電動リーチシリンダ100Aは、電動機20と、伝動ベルト40と、直線運動によりマストを移動させるボールねじ30と、弾性部材を含み、伝動ベルト40の張力を調整する張力調整部10Aと、を備え、張力調整部10Aは、通常時に、弾性部材の復帰動作を利用して伝動ベルト40を押圧することにより伝動ベルト40の張力を調整し、ボールねじ30に衝撃的外力が加わった時に、弾性部材の圧縮動作を利用して伝動ベルト40を弛緩させることにより衝撃的外力を吸収することを特徴とする。【選択図】図3


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    Title :

    REACH TYPE FORKLIFT AND ELECTRIC REACH CYLINDER OF FORKLIFT


    Additional title:

    リーチ式フォークリフトおよび当該フォークリフトの電動リーチシリンダ


    Contributors:
    AKAO MICHIO (author)

    Publication date :

    2016-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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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