English (UK) 
简体中文 Are you confused by the quotation of LJXY belt line?What is the difference between $300/m and $800/m? The anti-running adjustment is still crooked after a dozen times?I have dismantled hundreds of faulty belt lines, and found that the problems of 90% are hidden in the choice of materials and installation details - today, using the blood and tears of the repairman's lessons, to say through the price of the cat and anti-bias tips.
First, the price of fog: three strokes to see through the offer water
1. Material cost pit
Don't buy into the "common to all industries" crap! The cost difference between a food line and a mining line is 40%:
| Material Type | A must for the food line | A must for mine lines | price gap |
|---|---|---|---|
| leather belt | White PU/Food Grade PVC | Steel cord core rubber belt | Expensive $200/m |
| rolls | Stainless steel anti-corrosion type | Centring anti-deviation reinforced | Expensive $80/group |
| electrical machinery | IP65 waterproof rating | Explosion-proof + power redundancy 30% | Expensive $500/unit |
real-life example: A factory used industrial rubber belts to transport flour on the cheap, and three months later dropped black crumbs and lost enough money in recalls to buy three high-end lines.
2. Hidden mark-up traps
Charges that sales won't volunteer:
- Inclination > 15°? Add $80/m for each additional degree (climbing lines are expensive for a reason)
- Anti-static requirements? Coating Plus 40% (just needed for mine explosion protection)
- emergency stop rope: For each missing point, the quote drops by 500, but the security risk soars!
3. Identification of recycled rubber belts
Low price trap disaster area! Teach you three tricks to inspect the goods:
- Scratch the surface with your fingernail - white marks appear, it is mixed with recycled rubber.
- Smell - pungent sour odour = poor quality additives
- Look at the cut surface - uneven layering ≈ mixing of recycled materials
Second, anti-running off the actual combat: the teacher's 5-minute first-aid technique
▶ Installation of hard standards (1 item less is dangerous)
- Anti-bias device: The head and tail must be installed, the swing lever is ≤10cm from the side rollers.
- Roller verticality: Centreline deviation ≤3mm (take a laser pointer)
- emergency stop switch: At least 1 per 100 metres, mandatory retrofitting at reproduction points
▶ Runaway Adjustment Mnemonic
"Run tight left, run tight right, run tight right, run tight left; reverse in the centre, drop material to the centre"
- Right side of the head→ Tighten the left bearing housing screw (2 mm forward is sufficient)
- Left of centre→Roller bracket toright (-hand)Tune in (anti-common sense operation!)
- Drop Point Offset→ Add buffer bed + guide baffle (save money on belt change)
▶ Ultimate solution for stubborn runners
- sprinkle powder to locate the position: Sprinkle lime powder on the belt and see which track is twisted.
- Tapered Roller Suppression: Replacement of ordinary rollers, automatic deflection correction for slopes
- Laser Aligner: Mine line must be installed, accuracy up to 0.5mm
Self-questioning: 3 of the most gripping questions for white people
Q: After adjusting the runout for three days it's crooked again?
A: 80%.Sticky rollers! The ore line must scrape the drum accumulation every shift (scrape with a steel shovel inclined at 45°), and the food line rinses the rollers with lye every week.
Q: How long will the emergency fix last?
A.Three Steps to a Tear Emergency::
- Bonding with polymer repair strips (up to 72 hours)
- Riveting with steel buckles (can carry for a week)
- Ultimate solution: cut out the broken section and reconnect it (8 hours of downtime)
Q: Is used equipment worth it?
A: Look at these three points before you decide:
- Pressing on belt edges - slow rebound = ageing
- No-load current measurement - over rating 10% = bearing wear
- Check drum weld joints - more than 3 patching marks = violent use
Editor's view: seen too many factories to save 30,000 choose poor quality belts, and finally spend 300,000 to repair the production line. Remember: saving money on the conveyor line is like using cardboard to make bulletproof vests - mine to save explosion-proof motors? Waiting for the bomb plant! Food factory to save stainless steel rollers? Wait for a recall! Safety redundancy is never a cost, it's a life saver.
