As is known to all, the DN single hydraulic prop plays a great supporting role in the mine roadway, which has been deeply recognized and used by the users of major coal mines. It is simple to operate and convenient to use, and without liquid injection, the lifting and lowering of single hydraulic prop can be completed directly by hand handle. So if the single hydraulic prop work in the process of damage, how we should repair, this is what we want to know, let's take a look.
Maintenance management of DN single hydraulic prop
DN single hydraulic prop to establish maintenance management system. In the process of underground support, attention should be paid to the damage of the single hydraulic prop. When the prop appears automatic unloading and descending column, the unloading valve fails, and the prop surface has obvious mechanical deformation or mechanical abrasion, which affects the action, etc., it should be repaired in time. After 6 ~ 8 months of continuous downhole use (mostly after the mining of one working face) or longer downhole storage time, the pillar should be lifted for maintenance.
2 DN single hydraulic prop after maintenance of the prop must be tested, the content generally includes the operation test, load test, high, low pressure seal test, etc.
The sealing principle of seal compensation and seal tensioning is adopted for each sealing point of DN single hydraulic prop. In the case of wear seal, can be effectively compensated. Under the condition of high pressure support of the pillar, the seal can be kept tight, reducing the replacement rate of the seal, and reducing the maintenance and maintenance costs. DN single hydraulic prop has the characteristics of anti-corrosion, wear resistance and so on.
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