Crane And Mechanism Work Level Determination
Specifications
(GB3811-83) The crane's working level is determined according to ultilization level and working load of the crane
| Ultilization level | Working load | |||||
| Ultilization level | Total operation cycle times (N) |
Use condition | Option | Working load | Use condition | Option |
| U3 | 1.25×105 | Seldom use | □ | Q1-Light | Seldom lift to WLL,normally lift to light load | □ |
| U4 | 2.5×105 | Sometimes use | □ | Q2-Mid | Sometimes lift to WLL,normally lift to mid load ofteh | □ |
| U5 | 5.0×105 | Often use at mid level |
□ | Q3-Heavy | Often lift to WLL, normally lift to heavy load | □ |
| U6 | 1.0×106 | Not often use at busy level |
□ | Q4-Extra heavy | Frequently lift up to WLL | □ |
| U7 | 2.0×106 | Often use at busy level |
□ | □ | ||
Chart for working load of crane
| Working load | Working load factor (kp) | Ultilization level | ||||
| U3 | U4 | U5 | U6 | U7 | ||
| Q1-Light | 0.125 | A3□ | A4□ | A5□ | A6□ | |
| Q2-Mid | 0.25 | A3□ | A4□ | A5□ | A6□ | A7□ |
| Q3-Heavy | 0.5 | A4□ | A5□ | A6□ | A7□ | |
| Q4-Extra heavy | 1 | A5□ | A6□ | A7□ | ||
Chart for working load of crane
| Parts ultilization level | Average working hours/day or year |
Total design life | Use condition | Option |
| T3 | ≤1 | 1600 | Seldom use | □ |
| T4 | ＞1～2 | 3200 | Sometimes use | □ |
| T5 | ＞2～4 | 6300 | Often use at mid level |
□ |
| T6 | ＞4～8 | 12500 | Not often use at busy level |
□ |
| T7 | ＞8～16 | 25000 | Often use at busy level |
□ |
| Note: Total design lifeZ=BDY,Y is parts average service years,we take 8,D is average working days, we take 200-250 |
||||
| Working load | Working load factor (kp) | Use condition | Option | |||||
| T3 | T4 | T5 | T6 | T7 | ||||
| L1-Light | 0.125 | The parts often work under light load,and seldom work under max. load |
□ | M3□ | M4□ | M5□ | M6□ | |
| L2-Mid | 0.25 | The parts often work under mid load,and seldom work under max. load |
□ | M3□ | M4□ | M5□ | M6□ | M7□ |
| L3-Heavy | 0.5 | The parts often work under heavy load,and work under max. load |
□ | M4□ | M5□ | M6□ | M7□ | |
| L4-Extra heavy | 1 | The parts often work under max. load |
□ | M5□ | M6□ | M7□ | ||
Export Cases
Main markets: America, Canada, Mexico, the Middle East, Africa, Australia, Russia, Europe, Japan, Vietnam, India, etc<br>
Exhibitions:2015.10 KORMARINE, 2016.11 OSEA, 2018.11 OSEA, 2019.11 ADIPEC, 2020.11 Bauma China, 2023.4 Neftegaz, 2024.3 OTC ASIA, 2024.5 OTC America.
FAQ
Q1: Are you factory or business company?
Juli Sling is an OEM&ODM manufacturer with nearly 38 years of history.
Focusing on research and development and manufacturing of rigging.
Q2: What is your terms of delivery?
Accept EXW, FOB, ClF, etc. lf you have any other choices orrequirements, we could negotiate it together to help you find the mostconvenient and favorable one.
Q3: How does your factory do regardingquality control?
Quality is priority. We always attach great importance to qualitycontrolling.Skillful workers care every details during the production,Strict quality testing in each process, Authoritative testing reports can beprovided for customer.
Q4: What payment method is available?
By T/T, L/C, Other methods can be negotiated together.