The invention discloses a hydraulic control system for rapidly pressurizing and pulling a power head of a rotary drilling rig. The system comprises a first hydraulic pump, a first multi-way reversing valve, a first motor, a second hydraulic pump, a second multi-way reversing valve and a second motor, wherein the first hydraulic pump, the first multi-way reversing valve and the first motor are communicated through pipelines, and the second hydraulic pump, the second multi-way reversing valve and the second motor are communicated through pipelines; a pilot oil hole a1 of the first multi-way reversing valve is communicated with a pilot oil hole a2 of the second multi-way reversing valve through a first pilot oil way X1; a pilot oil hole b1 of the first multi-way reversing valve is communicated with a pilot oil hole b2 of the second multi-way reversing valve through a second pilot oil way X2; a first electromagnetic valve is arranged on the first pilot oil way X1; a second electromagnetic valve is arranged on the second pilot oil way X2; and a switching valve is arranged between the second multi-way reversing valve and the second motor. According to the hydraulic control system for rapidly pressurizing and pulling the power head of the rotary drilling rig, the input flow of hydraulic oil of a pressurizing loop is increased, the working efficiency of the pressurizing loop is improved, and the pressurizing and pulling speed of the power head is increased.

    本发明公开了一种旋挖钻机动力头快速加压和起拔液压控制系统,包括通过管路连通设置的第一液压泵、第一多路换向阀和第一马达,通过管路连通的第二液压泵、第二多路换向阀和第二马达,所述第一多路换向阀的先导油口a1和第二多路换向阀的先导油口a2通过第一先导油路X1连通,所述第一多路换向阀的先导油口b1和第二多路换向阀的先导油口b2通过第二先导油路X2连通;所述第一先导油路X1上设置有第一电磁阀,所述第二先导油路X2上设置有第二电磁阀,所述第二多路换向阀与第二马达之间设置有切换阀。本发明的动力头快速加压和起拔液压控制系统,增加了加压回路的液压油的输入流量,提高了加压回路的工作效率,加快了动力头的加压和起拔速度。


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    Title :

    Hydraulic control system for rapidly pressurizing and pulling power head of rotary drilling rig


    Additional title:

    旋挖钻机动力头快速加压和起拔液压控制系统


    Contributors:
    ZHANG YANMING (author) / CHEN SHASHA (author) / ZHANG HAO (author) / LI JINLONG (author) / LI YUANHU (author) / ZONG QUNTAO (author)

    Publication date :

    2022-02-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66D Haspeln , CAPSTANS / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren



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