Filling type hollow hydraulic support device
A hydraulic prop and filling technology, which is applied in the directions of props/supports, mining equipment, earth cube drilling, etc., can solve problems such as poor safety, difficult manufacturing and maintenance, and complicated friction clamping mechanism
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[0017] The present invention will be described in detail below through preferred embodiments in conjunction with the accompanying drawings.
[0018] Such as figure 1 As shown, the device of the present invention is transported in the tunnel, a general-purpose liquid injection gun is inserted into the liquid injection hole of the three-purpose valve 15, the liquid injection gun is opened, and the high-pressure liquid is driven by the hydraulic pump to the one-way valve in the three-purpose valve. Push the steel ball into the hydraulic chamber to raise the piston 5; when the upper end of the "T"-shaped top cover 8 is close to the working surface, the liquid injection gun stops operating, and the pressure of the emulsion 14 in the hydraulic chamber is the pump station pressure. , the "T"-shaped top cover 8 has obtained the initial supporting force; according to the height of the rising column, move the ring sleeve 11, connect the special tool funnel 12 with the ramp 1.1, and put ...
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