Precautions for the use of pillars
(1) When the pillar is in use, do not use it at the highest height;
(2) Pillars should generally be used in conjunction with metal hinged top beams;
(3) For new pillars and pillars used for the first time after restoration, the air in the inner cavity of the pillars shall be discharged;
(4) When supporting the pillar, flush the liquid injection valve body of the one-way valve with a liquid injection gun to avoid coal dust pollution and affect the
performance of the valve;
(5) When supporting pillars, the direction of the liquid injection valve body of the three-way valve is toward the downward groove direction of the working surface;
(6) Special drifting jacks should be used for migration, and the waist of the pillar should not be used as the fulcrum of migration;
(7) Hard objects such as hammers and picks are not allowed to knock the cylinder body and three-purpose valve;
(8) The retracted pillars should be lowered to the lowest height, and immediately placed on the side against the old lint. It is forbidden to throw them on the bottom
plate;
(9) Liquid injection guns are not allowed to be placed randomly. After injection, they should be hung on the handle of the second row of pillars;
(10) When crushing, it is strictly forbidden to use blasting or deadlift with a post-returning machine. Undercover methods should be used to loosen the pillars and then pull them out.
 

 

Back column
(1). Insert the withdrawal hook into one end of the unloading port on
the pillar.
(2). The operator should stand in a safe position, move the upward
plate to retract the hook, the emulsion in the column will be dis-
charged from the liquid inlet nozzle and drop the column, and then
return to the column.
(3). The pillars that have been returned should be stored on the work-
ing surface with their heads up to avoid soiling the cutting.



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