The invention discloses a lifting device and a rotary drilling rig, and relates to the technical field of engineering machinery. The lifting device is arranged on the rotary drilling rig and comprisesa pulley assembly, a winch and a steel wire rope extending out of the winch, wherein the pulley assembly comprises a movable pulley, a large pulley and a fixed pulley, the large pulley and the fixedpulley are arranged on a mast of the rotary drilling rig correspondingly, the fixed pulley is located between the large pulley and the movable pulley, the steel wire rope sequentially bypasses the large pulley, the movable pulley and the fixed pulley and then is connected with a power head, the movable pulley is used for being connected with the power head of the rotary drilling rig, the power head is driven to move through the steel wire rope, three force application points are formed between the steel wire rope and the power head in total, and the three sections of the steel wire rope applytension to the power head at the three force application points correspondingly, so that the lifting force of the steel wire rope is increased to three multiples, the technical problem that a rotary drilling rig with the lifting force of the steel wire rope increased to three multiples does not exist in the prior art is solved, and meanwhile, the lifting mechanism can reduce the requirement for the tensile strength of a single steel wire rope on the premise of ensuring the tension of the steel wire rope.

    本发明公开了一种提升装置及旋挖钻机,涉及工程机械技术领域。上述提升装置设置于旋挖钻机上,包括滑轮组件、卷扬和从卷扬伸出的钢丝绳,滑轮组件包括动滑轮、以及分别设置在旋挖钻机桅杆上的大滑轮和定滑轮,定滑轮位于大滑轮和动滑轮之间,钢丝绳依次绕过大滑轮、动滑轮和定滑轮后与动力头连接,动滑轮用于与旋挖钻机的动力头连接,并通过钢丝绳带动动力头运动,钢丝绳与动力头之间共有三个施力点,三段钢丝绳在三个施力点上分别对动力头施加拉力,使得钢丝绳的提升力为3倍率,解决了现有技术中不存在钢丝绳提升力为3倍率的旋挖钻机的技术问题,同时,该提升机构可以在保证钢丝绳拉力的前提下,降低对单根钢丝绳抗拉强度的要求。


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    Titel :

    Lifting device and rotary drilling rig


    Weitere Titelangaben:

    一种提升装置及旋挖钻机


    Beteiligte:
    WANG ZHEN (Autor:in) / PENG NAN (Autor:in) / WANG LONGGANG (Autor:in)

    Erscheinungsdatum :

    04.08.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B66D Haspeln , CAPSTANS / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren



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