High productivity
The maximum lifting weight is 40t, the maximum lifting moment is 856tm, the productivity is high, the maximum independent height is 82m, the maximum lifting speed is 136m/min.
High safety
Equipped with the advanced ET12.0 intelligent safety management system, it can effectively prevent accidents such as hook slippage, roof collapse and tower collapse.
Double brake configuration of the lifting mechanism, safe and reliable.
The lifting arm adopts a new connection design, which can perfectly cope with the consequences of irregular unloading of products.
Basic information
| Boom reach | Башенные краны 6ез оголовка | Device number | |
| Brand name | Zoomlion | Model | T7020-12 |
| Maximum load | 12ton | Arrow length | 70 m |
| Load at the end of the boom | 2ton | State | Used |
| Mast Section Size | 2x2x3m | year | 2018 |
| Free position | 52.4m | Maximum Height | 199.4 m |
| Work environment | 正常 | working time | 18个月 |
Crane Appearance Inspection
| Items to See | characteristic | Validation Item | characteristic | Validation Item | characteristic |
|---|---|---|---|---|---|
| Counterweights | √ | Cargo trolley | √ | Lifting frame | √ |
| Counterweight Barrier | √ | Lifting Hook | √ | Crane Base Mechanism | √ |
| Platform with counterweights | √ | Auxiliary | hook√ | Lifting mechanism | √ |
| arrow | √ | ballast | √ | Lifting and frame platform | √ |
| Lifting mechanism | √ | Swivel body | √ | Lifting frame booms | √ |
| Upper section of the tower | √ | Swivel mechanism | √ | Standard Section | √ |
| Front boom | √ | Operator's Cab | √ | Base Node | √ |
| Mechanism for changing the departure | √ | Distribution Box | √ |
Note: This inspection mainly determines whether the appearance of the tower crane is deformed or damaged, etc. It only reflects the appearance and does not affect the structure.
General design characteristics of a tower crane
| Inspection items | Characteristics | Inspection items | Characteristics | Inspection items | Characteristics |
|---|---|---|---|---|---|
| Construction of counterweights | √ | Upper section of the tower | √ | Pumping station | √ |
| Front boom① | √ | Rotary mechanism | √ | Cargo trolley | √ |
| Front boom② | √ | Operator cabin | √ | Lifting hook | √ |
| Front boom③ | √ | Ballast | Lifting mechanism | √ | |
| Front boom④ | √ | Lifting frame | √ | Mechanism for changing reach | √ |
| Front boom⑤ | √ | Standard section | √ | Rotary mechanism | √ |
| Front boom⑥ | √ | Amplification section | √ | Lifting device | √ |
| Front boom⑦ | √ | Basic section | √ |
Note: This inspection determines the overall structural characteristics of the tower crane, as well as the presence of welds, deformations, corrosion, etc., affecting the stability of the entire structure.
Control cabinet inspection
| Inspection items | Characteristics | Inspection items | Characteristics | Inspection items | Characteristics |
|---|---|---|---|---|---|
| Main power switch | √ | Humidity temperature controller | √ | Circuit breaker with frequency conversion | √ |
| Main contactor | √ | High and low voltage relay | √ | Frequency converter | √ |
| Safety switch | √ | Phase rotation relay | √ | AC contactor | √ |
| Intermediate relay | √ | Isolation transformer | √ | Emergency switch | √ |
| Cabin power switch | √ | Power switch for electrical panel | √ | Programmable controller | √ |
| Sound switch | √ | Voltmeter | √ | Limit relay | √ |
Note: This inspection determines the configuration and normal operation of electronic switch cabinet components.
Запасные части и аксессуары
| Inspection items | Characteristics | Inspection items | Characteristics | Inspection items | Characteristics |
|---|---|---|---|---|---|
| Counterweights | √ | Cargo trolley | √ | Lifting frame | √ |
| Counterweight barriers | √ | Lifting hook | √ | Crane base mechanism | √ |
| Platform with counterweights | √ | Auxiliary hook | √ | Lifting device | √ |
| Crane boom | √ | Ballast | √ | Lifting frame platform | √ |
| Lifting mechanism | √ | Rotary mechanism | √ | Lift frame guards | √ |
| tower head | √ | rotating mechanism | √ | Standards section | √ |
| Upper section of the tower | √ | Rotary mechanism | √ | Standard section | √ |
| Front boom | √ | Operator cabin | √ | Basic section | |
| Mechanism for changing the reach | √ | Distribution box | √ |
Note: This inspection checks the number of tower crane accessories, including but not limited to pins, platform railings, screws, etc.
Grand total
| Checking structural characteristics | Normal state |
| Appearance | Traces of normal use |
| Checking electrical components | Traces of normal use |
| Spare parts and accessories | Integral |
| Conclusion | Traces of normal use |