English (UK) 
简体中文 Hey, just joined the industry brother is not always by the foreman rushed to catch up with the schedule, a look at the steel cable wobbly heart straight drums? Don't panic! Today we will nag through the steel cable wiringessentials for survival-From bracket soldering to final insulation testing, a hands-on guide to avoiding the potholes that kill you!
🛠️ I. Bracket not welded? Beware of steel cables turning into "swings"!
Soul torture.Brackets on the wall and that's it? Re! An investigation into a plant accident last year found that.60% steel cable falls are caused by loose braces.
Key Operations.
- Concrete beams are pro-daddy!Brackets must be mounted on concrete beams or load-bearing walls with light steel keel walls? Don't be ridiculous! A stress directly uprooted.
- You can't beat a dovetail anchor bolt.Pre-embedded iron size ≥120×60×6mm, anchor bar diameter ≥8mm👉.with curved swallowtail tail(Not bent? Waiting to be ripped out!) .
- Bouncing lines to set the distance is king.Bracket spacing over12 metresWhat's the problem? Sagging over 100mm at midpoint of cable 👉 Proper rework! Use a laser level to mark the position, and colour paint to mark it (visually?). You could stuff your fist!) Mark the position with colour paint (visually?
A case of blood and tears.Old Zhang trying to save time to install brackets on the brick wall, typhoon night steel cable with lamps smashed through the production line - the money lost enough to buy three sets of brackets!
🔩 Two, steel cable assembly three words: tight! Weld! Card!
White questioned.How tight is enough to tighten a planter bolt? Answer.Sagging of the middle point of the steel cable ≤100mm! Over? You're responsible for the wires wiggling into a short circuit during a thunderstorm.
Three tough tips to prevent sagging.
| Operating Points | false demonstration | correct posture |
|---|---|---|
| Earring Welding | Spot Welding | Full weld + slag tapping inspection🚨 |
| Number of steel cable cards | Pack of 1 only | At least 2 + wire tie at the end |
| Flower basket bolt arrangement | 70 metres of steel cable with only two ends. | Add 1 intermediate bolt every 50 metres |
Hands-on mnemonics.
- Put on the earrings→Set on the heart ring→Up the double card
- Flower basket boltsScrew to maximum length(Allowance for tightening)
- inverted chainTighten from the centre to the ends(Brute force pull? The earring chipped and hit my head!)
⚡ Third, grounding omission? Waiting to become a "human lightning rod"!
The Chilling Truth.The steel cable itself is a conductor! Not grounded on a stormy day?Electrified steel cable → whole workshop tripped + risk of electric shock.
Grounded triple insurance.
- The first end must be connected.Crimp terminal with ≥10mm² yellow-green wire to earth busbar (on wrapped bolt?). (It comes off with a shock!)
- Flower basket bolt spans.Each bolt with aGalvanised flat steel curved U-clip👉 Bolt bar → Box → Ground wire full conduction
- Lightning Protection Deadly Details.grounding wireStringing is strictly prohibited! Must be star radial (strung?). Lightning strikes instantly turn into "kebabs" 🔥)
Sensei Data.Multimeter measurement of ground resistance > 4Ω? hurry to make up the grounding pole - dig a hole to bury2.5m galvanised angleStanding down 10Ω!
🔍 IV. Insulation testing: don't wait for smoke to regret it!
Lessons in blood and tears.A warehouse with broken insulation was not detected, and six months later a short-circuit caught fire 👉 burned up millions of goods!
Detection in four steps.
- Naked eye screening.Indentation on sheathed wire? Loose tape wrap? 👉Observed at an angle of 45° to sunlight(You can't see it in the light!)
- Shake table bimetry.
- Resistance between wires＞0.5MΩ
- Resistance of conductor to ground＞0.5MΩ(Not up to standard? Check for broken skins or soldered joints!)
- Load Test.Touching the cable after energisation.Immediately cut off the power when you feel numbness.! It's probably a grounding leak.
Sheathed wire exclusive points.
- Aluminium clips ≤ 50mm apart, junction boxAdd card within 100mm of both ends(Missing one? The box swings and rips the wires!)
- Plastic sheathed wire must be matched withPlastic Junction Box(Use a tin box? Condensation rusts through and leaks!) 🚨
💎 EXCLUSIVE INSIGHT: Safety is calculated, not gambled!
After twenty years of electrical and mechanical installations, there are two types of people that hurt the most."Mr Almost."(What's the difference between a 12 metre and a 15 metre bracket?) and"The Ghosts of Provincial Materials."(It's not like less welded clips are going to collapse). The essence of cable safety is"Material strength x process accuracy"The maths of the problem - 1cm less earring soldering, 30% lower load-bearing capacity; 2mm² thinner earthing wire, double the risk of lightning strikes ⚡.
Before the next inspection, ask three questions with a clear conscience:
- This steel cable can carry acid fog for 10 years without rusting? (Galvanising off = chronic suicide)
- Can you loosen or tighten a planter bolt when it's rusted to death? (Failure to maintain = a bomb hanging over your head)
- Is the insulation value of 0.5MΩ enough? (Wet workshop should be >1MΩ to be safe)
Remember that, brother.There are no shortcuts to safety.--One more inch of welding today, one less night of kneeling in the hearth tomorrow!
(Note: The technical parameters in the text are based on the national standard GB50303-2020, be sure to check the site design before practice)
