PROBLEM TO BE SOLVED: To provide a hydraulic driving device of a cargo handling vehicle which can reduce an engine load and reduce fuel consumption.SOLUTION: In a hydraulic driving device 16, a branch point 91 between a lift cylinder 4 and a bypass flow control valve 50 on hydraulic piping 49 is connected to a suction port 17a of a hydraulic pump motor 17 by hydraulic piping 47 for feeding hydraulic oil from the lift cylinder 4 to the hydraulic pump motor 17. This configuration allows the hydraulic oil from the lift cylinder 4 to be introduced through the hydraulic piping 47 to the suction port 17a of the hydraulic pump motor 17 during descent of a fork. This allows energy of the hydraulic oil to be introduced accompanying the descent of a fork to be utilized for rotating the hydraulic pump motor 17. More specifically, this allows a load of an engine 18 that rotates the hydraulic pump motor 17 to be reduced.SELECTED DRAWING: Figure 2

    【課題】エンジン負荷を低減し、燃費を低減できる荷役車両の油圧駆動装置を提供する【解決手段】油圧駆動装置16において、油圧配管49上におけるリフトシリンダ4とバイパス用流量制御弁50との間の分岐点91と、油圧ポンプモータ17の吸込口17aとは、リフトシリンダ4からの作動油を油圧ポンプモータ17に送るための油圧配管47によって接続されている。このような構成によれば、フォーク下降時において、油圧配管47を介して、リフトシリンダ4からの作動油を油圧ポンプモータ17の吸込口17aへ導くことができる。これによって、フォーク下降に伴って導かれる作動油のエネルギーを油圧ポンプモータ17の回転に利用することができる。すなわち、油圧ポンプモータ17を回転させるエンジン18の負荷が低減される。【選択図】図2


    Access

    Download


    Export, share and cite



    Title :

    HYDRAULIC DRIVING DEVICE OF CARGO HANDLING VEHICLE


    Additional title:

    荷役車両の油圧駆動装置


    Contributors:

    Publication date :

    2017-05-25


    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



    HYDRAULIC DRIVING DEVICE FOR CARGO HANDLING VEHICLE

    UEDA YUKI / YOKOMACHI NAOYA / MATSUO TSUTOMU et al. | European Patent Office | 2017

    Free access

    HYDRAULIC DRIVING DEVICE FOR CARGO HANDLING VEHICLE

    UEDA SUKENORI | European Patent Office | 2018

    Free access

    HYDRAULIC DRIVING DEVICE FOR CARGO HANDLING VEHICLE

    UEDA SUKENORI | European Patent Office | 2018

    Free access

    HYDRAULIC DRIVING DEVICE FOR CARGO HANDLING VEHICLE

    UEDA SUKENORI / SAJI TSUNESHIRO | European Patent Office | 2018

    Free access

    HYDRAULIC DRIVING DEVICE FOR CARGO HANDLING VEHICLE

    UEDA YUKI / YOKOMACHI NAOYA / MATSUO TSUTOMU et al. | European Patent Office | 2018

    Free access