China's first 6-bridge, 6-arm, 350-ton all-terrain crane SAC3500 to“Tough” way of landing strong BMW exhibition in Shanghai. SAC3500 continues the market position created by Qay220 in the markets of petroleum and petrochemical, large-scale factories, large-scale steel structure hoisting, etc. , for the European and n brands in China's large-tonnage wheeled crane market has become almost the most important sniper weapon, further strengthening the Sany in the domestic first brand in the strong position of large tonnage.
1.Mechanical specification
| Project | Parameter | |
| Models | SAC3500T8 | |
| Maximum lifting capacity | 350t | |
| Number of arm segments | 8 | |
| ARM shape | U形臂 | |
| Outrigger span | 8.95x8.5m | |
| Mounting angle of arm | 0/20/40 | |
| Maximum lifting speed of main hoist single rope (no load) | 130m/min | |
| Minimum turning radius | 11.68m | |
| Machine size (length x width x height) | 16788x3000x4000mm | |
| Total quality of the machine (announced status) | 72000kg | |
| Get on the engine | Rated power | 205/2200kW/rpm |
| Maximum torque | 1100/1200~1600N.m/rpm | |
| Get off the engine | Rated power | 485/1800kW/rpm |
| Maximum torque | 3185/900~1400N.m/rpm | |
| Driving parameters | Maximum speed | 80km/h |
| Leave the corner | 12° | |
| Approach angle | 16° | |
| Minimum ground clearance | 300mm | |
| Speed parameters | Full extension/contraction time of main arm | 780s |
| Lifting arm lift/fall time | 95/110s | |
| Rotation speed | 1.2r/min | |
| Weight parameters | Total quality of the machine | 54990kg |
2.Mechanical characteristics
2.1Strong performance
①Eight main arms 90m, standard arm 36m, optional heavy arm 48m, tower arm 78m. Equipped with Y-type super lifting device, no auxiliary crane can be self-disassembly, long arm lifting performance more than double
②Adopting new counterweight shift technology, 100t counterweight shift 1.8 m after the equivalent of 140t counterweight capacity, can save two vehicles
③Optional special auxiliary arm, 80m height lifting weight 50t, 90m height lifting weight 40T, 100m height lifting weight 30t, to meet 1.5 MW ~ 2.0 MW wind power maintenance needs
2.2Excellent driving performance
①Innovative six-axle chassis, all-wheel steering, four-axle drive, a variety of steering and driving mode, driving adaptability
②New intelligent multi-mode hydro-pneumatic suspension system, real-time attitude monitoring, active lifting and variable damping adaptive functions, driving more comfortable, driving more stable
③Powerful power and transmission system, maximum speed 80km/h, maximum climbing 50% , equipped with hydraulic torque, slow braking, greatly improve the safety and ride comfort
2.3Efficient, safe and reliable
①GCP system: the first Remote Monitoring and management system in China. It has powerful function of working condition and collecting working parameters, and can implement remote fault diagnosis and management
②Multi-pump, multi-loop hydraulic system, electric proportional and multi-stage pressure control, to achieve speed grading and micro-motion optimization, better performance, the working efficiency is raised by 20% , and the lifting performance of the middle and long arm section is greatly improved
③Multi-function wireless remote control system makes crane operation more convenient and safe, equipped with anti-rollover warning system, Operation Safety Protection Program and fault diagnosis system to ensure vehicle operation safety Adopting high precision, high stability and high intelligence moment limiter system, protecting lifting work in all directions, equipping abundant sensors, feedback data information in time, real-time monitoring, master the working status of the whole vehicle at any time
3.Core technology
3.1Optimization of shaft load matching
The axle load is even in the heavy load transfer state, such as the overrun of the whole arm and leg belt and the support leg pad, the load on the axle and the tire is small, and the heavy load transfer ability is strong
3.2Counterweight shifting technology with load
①The combined type can carry the load-shifting counterweight, and the transportation transfer field weight is low
②It can be modified with load (front and back 1.5 m)
③Small site constraints, narrow space adaptability is better
3.3Dynamic correction technology for overtaking side bend
①In the process of arm extension, the intelligent algorithm of self-adaptive closed-loop and automatic recognition of arm status are presented
②Dynamic torsion correction side bend, arm stretch worry-free
