English (UK) 
简体中文 Hey! For those of you who are new to operating conveyors, do you get numb when you hear "belt slip" or "belt deflection"? Do not panic! Today we chatter about these three types of fatal faults ofFirst aid at the scene-Don't wait for an expert, you can do it yourself! 🚀 (hey wait, the emoticon went off...start over!) Let's get cracking here!
🔥 I. Slippage: belt light turn not walk? First pinch the source!
Field Symptoms: The drive pulley is whirring, but the belt is like stepping on a banana peel - it's slow and doesn't even move. Worst of all, this thing can grind out high-temperature sparks and start a fire in a minute!
The Emergency Triple Axe::
- Pull the emergency stop rope immediately!Don't hesitate to get your hands over your head!
- Check the rollers for adhesion.: Soot, frost, oil? Take a trowel and scrape it off! If you get oil on it, sprinkle dry sand orrosin powderIncrease friction (be careful not to use your hands, blower blows!)
- Hand Measured Tension: Press the belt with two fingers, and the subsidence ≤ 2% of the belt width is qualified! Not enough? Quickly adjust the tensioning device - not enough weights to add counterweights, spiral tensioning screwed twice!
lesson learnt through blood and tearsIn 2023, a mine in Guizhou stopped in time because of skidding, and the drum friction started a fire, 16 lives were lost! If you skid for more than 30 seconds, you have to treat it as a precursor of fire!
Root and Branch Programme::
- Rainy day anti-slip tips: Roller engravingherringboneDouble the friction
- Extra long belt to prevent permanent deformation: Insufficient tensioning stroke? Cut off a section to re-sulphurise the joint (Master's words: "Don't hold on to it, cut it off when you need to cut it off!")
- Slip monitoring device: Install a speed sensor that alerts you if the belt speed falls below the drum 95% - it's more money than a loss of life!
↔️ Second, the runaway: belt "twisting"? The right medicine!
Deadly Signal: Minor spillage stops production, major edge tearing or even overturning of the stand!Look at three scenarios before you make a move::
| Type of runout | on-the-spot judgement | operating mnemonic |
|---|---|---|
| No-load runout | It's crooked even without the material. | Adjust the angle of the rollers!Move the left roller forward if it's to the left. |
| It's the heavy loads that make you go off course. | It's crooked as soon as it's loaded. | Change the drop point!Don't let the coal pile hit the side of the belt |
| Deflection at the roller | only askew at the beginning and end | Calibration roller!Don't exceed 2mm tolerance! |
Tips from the master::
- Spherical rollers are used with caution!Short belts can fit, long belts insteadIncreased wear and tear-Remember, don't use this over 50 metres!
- The "Four Steps" to Bias Busting: Clear the sticky coal first, then adjust the rollers, then adjust the roller, and finally fine-tune the tensioning.It's all in vain.!
counterfactual data: 73%'s deflection accident was caused by the rusting of the roller bracket, which was not replaced in time! Give the bracket bolts every monthspray anti-corrosion oilIt's better than nothing.
✂️ III. Tear: Belt "ripped"? Three steps to stop the damage!
Ranking of Tearing Culprits::
- a thorn in one's side(Occupying 60%!): Gangue and iron sticking into the belt.
- Run-off worsened: Belt side scraper rack like a knife cuts cloth
- Deterioration of connectors: The old joints "click" off.
On-site haemostasis::
- Emergency Stop + Clearance: Disconnect the power immediately! Usemagnetic barSucking up iron, poking with a stick? Beware of getting rolled in with a stick!
- Provisional suture::
- lobule:: PaintingCold vulcanisation rubber XN300Patch tape compaction
- tear: Use of"Temporary stitching" with metal clips.Hold on until maintenance time.
- Anti-secondary tearing: Before and after lacerationplate linerTo avoid larger tears when crossing the rollers
Permanent repair either way::
- cold patching: Scrape glue → paste patch → roller compaction (2 hours resumption)
- hot vulcanisationCutting the cracks → laying the steel wire layer → high temperature vulcanisation (strength as new but takes 8 hours).
cost comparison: A cement factory has measured - 500 RMB/m for cold patching materials, 2000 RMB/m for hot vulcanisation, but the life difference is 3 times!You need hot vulcanisation for long cracks.
💎 Personal view: the "counter-intuitive" truths that white people avoid.
- Don't go wild with the counterweights when you slip!Excessive tensioning forceStrain joints. A power plant measured: tension over 10% life halved!
- Run-off monitoring is not as good as anti-clogging: The tear in the 60% was a puncture from hard material build-up after the drop tube was clogged! RetrofittingVibration BlockerMore practical than a tear sensor
- Patch adhesive "picks the weather.": Below 15°C the cold vulcanised rubber must beTungsten iodine lamp bakingIf you don't, it won't stick! How many newbies have been screwed by this detail
Finally dump a hardcore statistic.Seventy per cent of conveyor belt failures are caused by laziness! Maintenance at this pace is spot on:
- everyday: Feel the temperature of the drum and clear the coal from the rollers.
- daily: Adjusting the tension once, checking the condition of joints
- every month: Calibrate primary drum level
Remember, guys: belt failure is like a cold - if it drags on, it becomes pneumonia! Don't be soft when it's time to stop.Safety savings are real profits.💪! 💪 (Oops almost again...) So be it, get to work!
