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2020
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HYD200 type use and maintenance points (III)
When repairing the accumulator, the nitrogen should be released first, and then the upper cover should be disassembled, otherwise it will collapse and hurt people. More attention should be paid to safety when charging nitrogen to the accumulator. The main valve should be carefully started and the opening pressure should not be higher than 7 ~ 8MPa. Then quickly operate to close the valve, which can ensure safety.
HYD200 type use and maintenance points (III)
(11) When overhauling the accumulator, the nitrogen should be released first, and then the upper cover should be disassembled, otherwise it will collapse and hurt people. More attention should be paid to safety when charging nitrogen to the accumulator. The main valve should be carefully started and the opening pressure should not be higher than 7 ~ 8MPa. Then quickly operate to close the valve, which can ensure safety.
Special nitrogen flushing tool
(12)When the atomizing gas device fails in the system(No oil dripping or insufficient oil dripping in the oil injector, insufficient air pressure, etc.)The rock drill should no longer be forced to start, because the rock drill loses cooling and lubrication in this state and can quickly damage the parts.
(13) When the striking surface of the piston and the drill tail is piled (or peeled off) 2mm, the impact performance changes, and it is meaningless to hit again, because after the hardness layer of carburizing and quenching, the piston and the drill tail will soon be scrapped. If the replacement is not timely, there will be an empty fight. Dropped pieces can also cause abnormal damage to other components. As shown in the following figure:
(14)Special tools and attachments must be used in the process of maintenance and troubleshooting, and barbaric disassembly is strictly prohibited.
Accumulator assembly tool
Front end cover assembly tool
Seal Removal Wire Hook
Bimetal bearing sleeve assembly tool
Top wire
(15) For hydraulic rock drills that have not been used for a long time, the nitrogen in the accumulator should be released clean. It is also necessary to open the oil inlet and return ports of the impact and rotary motors, fill them with hydraulic oil and then seal them to achieve the purpose of rust prevention.
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