English (UK) 
简体中文 Have you ever encountered this situation? Spend a lot of money to buy a set of Ljxy double-deck power roller line, but the result is that it rusts and jams within a few months after the installation, or the goods are always running and slipping? To be honest, this situation is nine times out of tenWrong choice of round tube materialorThe installation procedure was not done correctly.The result. Newcomers to this line are most likely to fall on these two things - after all, the equipment description written like a book, and online information is fragmented. Today I will break open the rubbing of the clear, how to avoid these pits.
First, the round tube material selection is not correct, the whole thing is lost!
The core of Ljxy's double deck power roller line is these round tube rollers, the material directly determines whether it can carry in your workshop. I have seen too many people only look at the price, the result of choosing the wrong material to lose in more maintenance costs.
1. Galvanised carbon steel preferred for general workshops
If you don't have anything corrosive in your workshop, it's just plain boxes and pallets going back and forth.Galvanised carbon steelIt's perfectly adequate. Nearly half the price of stainless steel, and the rust protection is OK. But watch out! The welds should be supplemented with zinc, otherwise the welded joints will rust through especially fast - some factories try to save trouble and not deal with it, you have to take a torch to the welds when you receive the goods, and there is a leakage to immediately ask for a complementary spray.
2. Humid, acidic and alkaline environment must use stainless steel
Like seafood factories, chemical plants and such places, stainless steel is the only choice. But newbies are easily confused: what's the difference between 304 and 316?
- 304 stainless steel: Can carry seawater fog, weak acids and alkalis (such as cleaning agents). Like fish and shrimp processing workshop floor standing water all year round, with 304 roller to support five years no problem.
- 316 stainless steelStrong acid and alkali environments can be used, such as electroplating workshop potion drops directly onto the roller. Expensive 30% or so, ordinary factories really do not need.
3. Anti-slip and anti-noise choose rubber-coated rollers
Electronics factory to send precision circuit boards, glass factory transport bottles of these afraid of bumping, naked stainless steel instead of dangerous - a vibration of the goods on the shift. This time to usePolyurethane rubber-coated rollersThe surface is elastic like a tyre. What's more, some people make the rubber surface into a trapezoidal bump (like a non-slip pattern), and it never slipped again when conveying bags of flour.
Material Selection Checklist
take Recommended Materials Money Saving Tips Drying general workshop Galvanised carbon steel Zinc powder spraying on welds Wet environment for aquatic/food products 304 stainless steel Select wall thickness ≥1.5mm anti-deformation chemical corrosion zone 316 stainless steel Pickling passivation treatment to enhance corrosion resistance Fragile goods line Polyurethane overmoulding Selection of trapezoidal bump pattern anti-slip
Second, the installation is not screwing screws, the wrong step of the whole plate are collapsed!
Ljxy double line is not installed properly, the chain will break, the roller collapsed waist. Online tutorials always say "construction according to the drawings", but the drawings will not tell you these tears of experience.
1. Don't rely on a tape measure for positioning - look for the "spine" first.
Many newbies measure the roller spacing as soon as they come up, only to find that the whole line is crooked after installation. The correct approach is:
- First find the plant'sload-bearing networkThis is a longitudinal centre line (this is the "spine" of the conveyor line);
- When there is already equipment next to theBased on existing equipment side(e.g. next door packer track offset parallel by 10cm).
Remember: with a centreline deviation of more than 3mm, the runout gets worse!
2. The spring-loaded type is most likely to be mounted incorrectly.
Ljxy's spring-loaded rollers claim to be "push to fit", but novices often make two mistakes:
- It's not pressed in vertically.: Pressing in diagonally will cause the spring to get stuck halfway and come off after a month of operation. The correct technique is: hold the ends of the drum by hand andKnees in the middle.Firing Straight Pressure;
- forget to mention the level of measurement: After loading take the bottled water and put it on the roller and roll it, where the water bottle goes, use theWhich side of the bracket is the shim adjusted.
3. Chain tensioning should be loosened.
Masters love to say "tighter than loose", but for Ljxy double sprocket structure this is a big no-no - the chain is too tight will make the shaft to double the force.
- Standard operation: Tension toFinger pressure chain sinks 5mm.;
- Test trick: hold a screwdriver against the chain and listen to the sound after switching on the machine.If it bounces, it's too loose.The harsh rubbing sound is too tight.
Third, these maintenance actions do not do, equipment life cut in half!
The "regular lubrication" written in the maintenance manual is too vague. I've come up with three key actions that even a beginner can do:
1. Don't use a grease gun to grease the bearings.
Too much pressure from the grease gun can squeeze the seal instead. The right way to do it:
- tearToilet paper rolled into a coneDip it in lubricant and shove it into the bearing slit;
- Turn the roller twice to allow the oil to seep in, and the paper towel will also bring out the iron filings.
2. Rubber-coated rollers are most afraid of being scratched by blades.
Workshop workers often take a hobby knife to cut the tape wrapped around the drum, and if they are not careful, they cut through the adhesive layer.
- Emergency remedy: useTyre glue + rubber sheetStick to the scratches;
- Preventive measures: above the drumWarning sign "No knives", switch to a glue removal spray.
3. Monthly mandatory "three touches and one listen"
- Touch the temperature of the drum (over 60℃ is hot indicating that the bearing is jammed);
- Feel the chain looseness (sagging in the middle not more than 10mm);
- Feel the rack vibration (hand against the bracket to feel a continuous numbness need to stop the machine);
- Listen to the motor (sharp sound is lack of oil, dull sound is excessive load).
IV. Self-questioning: the most common practical problems asked by novices
Q: What should I do if the length of Ljxy's double layer cable exceeds 10 metres?
A: In the middle must be addedAuxiliary drive section! The single segment chain tension limit is 10 metres, hard over length will cause the lower chain to break. For example, 15 metres of line is divided into two sections of 5m + 10m, and the joints are made with theDouble sprocket transition wheelArticulation.
Q：How can I solve the problem that the conveyor ramp always slips?
A: Must be changed when slope exceeds 2%Coarse-grained rubber-coated rollers.. A more effective programme is:
- Roller pitch reduced toCargo length 1/4(For example, if the box is 40cm long, put a roller every 10cm);
- Add at the start of the rampBaffle SensorThe start-up is prohibited until the goods are in place.
Q: How to deal with rusty welded joints on stainless steel rollers?
A: Never sandpaper! It will destroy the oxide layer.
- Small rust spots: paintedpassivation pasteLeave for 10 minutes to wipe off;
- Large rust spots: useStainless steel electrode refinishingPickling afterward.
I finally say the truth: Ljxy this set of equipment to buy back is just the beginning.Save 30,000 by choosing the right material, and use it for five more years by installing it finely.The people who teach you to "probably load" have never experienced the collapse of a production line in the middle of the night. Those who teach you "probably loaded", 80% is not experienced the production line collapse in the middle of the night crash. According to the above points step by step to do, less step in the pit is to save money!
