Travel Lift Erection BridgeFabrication Machine

Our DYJ900-32A3 travel lift erection bridge fabrication machine isdesigned with three-in-one mode for girder lift, transport and erection inhigh-speed rail passenger dedicated line. It can lift and transport thefull-span box girder through the tunnels with the traveling speed of 250km/hand 350km/h, and erect the prestressedconcrete girder with the span of 32m, 24m, 20m, and the type of single-box,single-chamber or single-box, dual-chamber. In addition, it can also finish girdererection at the tunnel entrance or inside the tunnel, which comes with the samemethods as working outside the tunnel. What’s more, the girder carrier candrive and operate on sidewalk, roadbed and erected box girder, causing no harmto them.

Compared with the existing bridge fabrication machine, the unit cansuccessfully erect the girder without the help of lower guide beam or any otherauxiliary equipment. As it has no guide beam, it can easily complete the girdererection when going through the tunnel. Any part of the machine requires noanchoring during the girder installation process, reducing working amount andimproving operating safety. It also has convenient spanning and goodadaptability to a variety of operating environments. Designed with simpleoperating methods, this lightweight equipment enjoys good stability andreliability, as well as high efficiency at work. 

Technical Specifications
Whole Vehicle

Machine model: DYJ900-32A3

Machine weight: About 530t

Overall dimensions (L × W ×H): 91.8×7.4×9m

Rated lifting capacity: 900t(without spreader)
Adaptable beam: High-speed railway passenger line 32,24,20m two-lane single-boxsingle-chamber or dual-chamber box girder
Climbing ability: 30‰

Min. turning radius: 150m

Min. curve radius of girdererection: 2000m

Max. adaptablelongitudinal slope of girder erection: 20‰

Adaptable altitude: ≤2000m

Environmental operatingtemperature: -20°C / 50°C

Workingmax.wind: 6 level

Non-working wind: 12 level

Utilization rating: U0

Load status: Q3

Whole working-level: A3
Sector level: M4
Nighttime construction lighting: Available

Lifting Trolley
Trolley number: 2

Vertical hanging spacing:30.1m (32.6m,90t girder), 22.1m (24.6m,700t girder), 18.1m (20.6m,590t girder)

Span change method: Backtrolley shift
Vertical fine-tune distance (full load): ±200 mm

Horizontal fine-tune distance(full load): ±150 mm

Longitudinal movementspeed:   0.2m/min

Lateral movement speed:   0.2m/min

Operation mode: Fuel tankdrive
Lifting height: 4.5 m (box girder top surface from the ground distance)
No-load lifting speed:  0—1.5m/min

Full-load lifting speed: 0—0.5m/min

Hydraulic winch quantity:   4

Wire rope type: 6×WS(36)＋IWRC-30-1910 surface contact

Nominal tensile strength ofwire rope: 1910 N/mm2

Safety factor: 6.25

Wire rope lifting system:four-point lifting, three- point balance
Brake system: hydraulic brake, parking brake and caliper disc brake
Caliper disc brake model:   ST3SH-A

Caliper disc brakequantity:      4

Travel Mechanism

Full-load travelingspeed:     0-4 km / h (flat slope)
0-3 km / h (3% longitudinal slope)
No-load traveling speed:   0-7 km / h
Suspension lift stroke: ±300mm

Longitudinal steering: ± 15°

90 °steering: ± 3°

Tire inflation pressure: 8 bar

Tire ground pressure: 6 bar

Tire model: 26.5R25

Steering System

Longitudinal steering: ±15º

90 °steering: ±5°

Operation mode:    Straight, oblique, horizontal moving,swing, fishtailing

Steering method: Fuel tankdrive, independent steering

PowerSystem
Engine power:448kW × 2 units
Auxiliary generator: 40KW
Fuel: Diesel