The holder is a mechanical device used to fix the bursting disc, which is divided into upper and lower parts. After fixing the bursting disc, connect the flange, and connect the end to the safety valve, or directly connect to the atmosphere, so that the bursting disc and the pressure pipe at the front end form a complete balanced system. Its main function is to fix the bursting disc so that the blasting can work normally.

     The holder is fixed on the front end of the feeding device body, and is used to hold the drilling tool in the hole and cooperate with the gyrator to mechanically unscrew the drill pipe. Use the baffle plate and anchor rod of the slip seat to fix the slips, pull out the two inserting rods to take out the slips, and enlarge the through hole to pass the thick diameter drilling tool.

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