Mining stainless steel fireproof rolling shutter door

After long-term use, the maintenance focus of underground pneumatic fireproof rolling shutter doors in coal mines includesMechanical components, electrical systems, sealing performance, linkage function, appearance and cleaning, and record managementThe six core aspects are as follows:

1. Mining stainless steel fireproof rolling shutter doorMechanical component inspection and maintenance

• Guide rails and scrollsRegularly clean the dust, oil stains, and foreign objects inside the guide rail to ensure a smooth and unobstructed surface; Check if the scroll is deformed and repair or replace it if necessary.

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• transmission deviceAdd lubricating oil to rotating parts such as transmission chains, pulleys, and bearings to reduce wear and ensure smooth operation; Check the tightness of the chain to avoid faults caused by excessive looseness or tightness.

• Curtain surface and connecting componentsCheck whether the curtain surface is damaged, deformed or corroded, and repair or replace it in a timely manner; Tighten the curtain surface connecting bolts and rivets to prevent loosening and detachment.

2. Mining stainless steel fireproof rolling shutter doorElectrical system testing and maintenance

• Controller and motorTest the electric opening and closing function to ensure smooth start stop, accurate limit, and no abnormal noise; Check the temperature rise of the motor to avoid overheating and damage.

• Line and insulationCheck whether the power and signal lines are aging or loose, and whether the insulation performance is good; Tighten the wiring terminals to prevent poor contact from causing malfunctions.

• backup power supplyIf equipped with backup power sources such as batteries, it is necessary to regularly check their charging status and switching function to ensure normal power supply in the event of a main power failure.

3. Verification of sealing and fire resistance performance

• Sealing strip inspectionCheck whether the sealing strips between the curtain surface and the guide rail, ground, and wall are aged or cracked, and replace them in a timely manner to ensure a tight seal and prevent smoke leakage.

• Fire resistance performance sampling inspectionVerify the fire resistance limit certification documents of the curtain surface, and if necessary, entrust a third-party organization to conduct random inspections to ensure that it still meets the design requirements for fire resistance time.

4. Linkage function testing and calibration

• Smoke/Temperature DetectorSimulate fire signals, test whether the detector can accurately trigger the action of the rolling shutter door, and provide feedback signals to the fire control center.

• Linkage logic verificationConfirm that the rolling shutter door can move according to the design program (such as two-step descent) in the linked state, that is, it first descends to about 1.8 meters above the ground and stops, and then continues to descend to the ground after a delay.

• Manual emergency deviceTest emergency operating devices such as manual zippers and joysticks to ensure that the rolling shutter door can still be manually controlled to open and close in the event of power failure or pneumatic system malfunction.

5. Appearance cleaning and rust prevention treatment

• surface cleaningWipe the surface of the rolling shutter door with a soft dry cloth, avoiding the use of rough cloths or chemical cleaners; Regularly clean the dust and oil stains on the guide rails, scrolls, and other parts.

• rust prevention treatmentRust removal treatment should be carried out on easily corroded parts (such as steel curtain surfaces, brackets, etc.), and anti rust paint or lubricants should be applied to extend their service life.

6. Maintain records and archive management

• Record maintenance statusAfter each maintenance, record in detail the inspection items, discovered problems, handling measures, and replaced parts and other information.

• Archive and saveArchive and preserve maintenance records for traceability and querying purposes; Analyze the operation status of the rolling shutter door based on records and develop a preventive maintenance plan in advance.