To provide a brake control device which can inhibit a brake response time from increasing when rapid brake operation is conducted, and to provide a crane including the brake control device.SOLUTION: A brake control device 10 includes: a brake unit 6 having a positive chamber 6b which generates force in a direction such that brake force exerted on a winch drum 11 is increased and a negative chamber 6c which generates force in a direction such that the brake force is decreased; an operation device 7 to which brake operation is provided; an electromagnetic proportional pressure reduction valve 2 which opens or closes so that a pressure of working fluid to be supplied to the positive chamber 6b can be adjusted according to a control amount of the brake operation; a selector valve 3 which switches its state between a pump connection state in which the negative chamber 6c is connected to a hydraulic pump 22 and a tank connection state in which the negative chamber 6c is connected to a tank 27; and a controller 4 which controls operation of the selector valve 3 so that the pump connection state is switched to the tank connection state when conditions of determination for determining that the rapid brake operation is provided are met.SELECTED DRAWING: Figure 2

    【課題】急ブレーキ操作が行われたときにブレーキ応答時間が長くなることを抑制することが可能なブレーキ制御装置及びクレーンを提供する。【解決手段】ブレーキ制御装置10は、ウインチドラム11に対するブレーキ力を大きくする方向の力を発生させるポジティブ室6bとブレーキ力を小さくする方向の力を発生させるネガティブ室6cとを有するブレーキユニット6と、ブレーキ操作が与えられる操作装置7と、ブレーキ操作の操作量に応じてポジティブ室6bに供給される作動油の圧力が調節されるように開閉する電磁比例減圧弁2と、ネガティブ室6cが油圧ポンプ22に接続されるポンプ接続状態とネガティブ室6cがタンク27に接続されるタンク接続状態とを切り替える切替弁3と、急ブレーキ操作が与えられたことを判定する判定条件が満たされた場合にポンプ接続状態がタンク接続状態に切り替わるように切替弁3の動作を制御するコントローラ4と、を備える。【選択図】図2


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    Title :

    BRAKE CONTROL DEVICE AND CRANE INCLUDING THE SAME


    Additional title:

    ブレーキ制御装置及びこれを備えたクレーン


    Contributors:

    Publication date :

    2023-07-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66D Haspeln , CAPSTANS / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING



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