To suppress rubbing between a load platform and a guide rail when pulling out the load platform even when an oil chamber of a lift cylinder is pressurized.SOLUTION: A retractable load platform lifting device that retracts a load platform to an underside of a vehicle frame includes: a lift cylinder to raise and lower the load platform; a slide cylinder that moves the load platform along a guide rail; a lifting control valve that controls a flow of hydraulic oil to the lift cylinder; a slide control valve that controls the flow of hydraulic oil to the slide cylinder; and a control device that controls the lifting control valve and the slide control valve. The control device commands the lifting control valve to lower the load platform while continuing a command of a drawer operation when the load platform is in a retracted position after a start of the command of the drawer operation to the slide control valve.SELECTED DRAWING: Figure 14

    【課題】リフトシリンダの油室が昇圧した状態でも荷受台を引き出す際の荷受台とガイドレールとの擦れを抑制する。【解決手段】荷受台を車枠の下側に引き込んで格納する格納式荷受台昇降装置において、前記荷受台を昇降させるリフトシリンダと、前記荷受台をガイドレールに沿って移動させるスライドシリンダと、前記リフトシリンダへの作動油の流れを制御する昇降制御弁と、前記スライドシリンダへの作動油の流れを制御するスライド制御弁と、前記昇降制御弁及び前記スライド制御弁を制御する制御装置を備え、前記制御装置は、前記スライド制御弁に対する前記荷受台の引き出し動作の指令開始後、前記荷受台が格納位置にある場合に前記引き出し動作の指令を継続した状態で前記昇降制御弁に前記荷受台の下降動作を指令する格納式荷受台昇降装置を提供する。【選択図】図14


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    Title :

    RETRACTABLE LOAD PLATFORM LIFTING DEVICE


    Additional title:

    格納式荷受台昇降装置


    Contributors:

    Publication date :

    2022-03-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS



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