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Disassembly sequence of YT-23 air leg rock drill (1) First remove the air leg, muffler cover, trachea, water pipe, brazing and other auxiliary components. (2) Remove the oil injector from the rock dr

Failure 1: Rock drilling speed is reduced (1) Reasons for the failure of the rock drill: first, the working air pressure is low; second, the air leg is not flexible enough, the thrust is insufficient

(1) Before ventilating the air leg rock drill, the handle of the pressure regulating valve should be moved to the "O" position to prevent the air leg from elongating suddenly during the ventilation an

Matters needing attention in the maintenance and maintenance of air leg rock drills (1) Before using the new machine of the air leg rock drill, it is necessary to disassemble and clean the internal p

In the afternoon of March 28, Deputy Mayor of Jining Municipal People's Government, Secretary of the Party Committee and Director of the Municipal Public Security Bureau, Li Haiyang, Deputy Secretary-

According to the "Measures For The Evaluation Of Technology-based Small And Medium-sized Enterprises" (Guoke Fazheng [2017] No. 115).And the relevant provisions of the "Notice On Carrying Out The Eval