| 摘要 |
<p>The invention relates to a field setting installation for the equipment designed for drilling mine openings. The setting installation consists of a hydraulic battery placed on the hydraulic circuit of the active surface of the piston of the hydraulic cylinder for field setting of the sliding beam, a deblockable direction valve connected to the hydraulic circuit of the non active surface of the hydraulic cylinder; its control is connected to the hydraulic battery for maintaining it open and keeping it on the storage tank of the space of the non active surface of the hydraulic cylinder piston during the whole time when the hydraulic battery supplies the hydraulic cylinder. A hydraulic resistance is provided on the valve exit in order to get the control pressure necessary for the deblockable direction valve placed at the entrance of the battery and the hydraulic cylinder supply circuit to start withdrawing the drilling equipment from the field.</p> |
