Yield anchor cable spherical rotating and aligning device
A kind of anchor cable and spherical technology, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of greatly reduced prestress, unobvious gradual pressure yield, and uncontrollable deformation of surrounding rock, etc., to achieve reduction The degree of stress concentration, the effect of yielding pressure is obvious, and the effect of long service life
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and examples, but it should be understood that the protection scope of the present invention is not limited to the contents described in the examples.
[0022] A spherical rotating centering device for pressing an anchor cable, comprising a hemispherical tray 3 , an anchor ring 4 , an anchor clip 2 and a center roller 5 . The above-mentioned hemispherical tray includes a tray body that is approximately hollow and hemispherical. The periphery of the tray body is provided with an annular flat bottom surface for contacting the wall of the roadway. The wall thickness of the tray body gradually increases from the edge to the center. A spherical groove is arranged in the center, and the spherical roller is placed in the spherical groove, and can freely rotate in the spherical groove, and the spherical roller is provided with a cylindrical axis hole. The above-mentioned anchor r...
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