60T hydraulic fit-up rotator
1 Summary
This rotator is mainly composed of one power rotator, one idler rotator and two idler hydraulic fit-up rotators. Vessel is welded on this rotator, till get to required length. First vessel lay on power rotator and idler rotator, second vessel lay on two idler hydraulic fit-up rotator. When spot welding two vessels, the rotator moving on rail, and then holding up two vessels. Manipulator finished inner and outer circumferential seam welding. And then add more vessels, till last vessel is welded, the whole vessel is finished welding.
Hydraulic fit-up rotator has hydraulic up-down device, it can moving on rail. Power rotator is controlled by inverter which control AC motor and speed reducer to drive roller turning.
2 welding technology flow
First step，lay first vessel on power rotator side；
Second step，lay second vessel one idler rotator side, then can realize fit-up welding through adjust fit-up rotator；
Third step，manipulator finish inner and outer seam welding；
fourth step，power rotator take finished vessel moving backward；
fifth step，lay third vessel on idler rotator side；
sixth step，adjust fit-up rotator to realize fit-up welding；
Seventh step，manipulator finished inner and outer seam welding；
eighth，power rotator take finished vessel moving backward；
ninth，lay fourth vessel on idler rotator side；
tenth，adjust fit-up rotator to realize fit-up welding；
eleventh，manipulator finished inner and outer seam welding；
Following above step again and again till last vessel is welded.
3 Device character
3.1 Suitable workpiece for machine
1) Max pipe weight： 60T；
2) vessel diameter: φ2000mm – φ2500mm；
3.2. Machine character
1) On the base of idler rotator fixed moving wheels which can make the idler rotator moving along with rail.
2) the two rotator both have hydraulic cylinder，it can adjust through expansion of oil cylinder，so that will be convenient to fit-up.
3) special type used for aligning two pcs workpiece, compensate workpiece elasticity deformation.
4 Technical parameter:
- model： ZHGK-60
- rated loading capacity： 60Tons
- suitable workpiece diameter range：φ2000～φ2500mm
- wheel diameter×width： φ520×178mm
- wheel type: polyurethane
- adjust mode： hydraulic adjusting
- hydraulic working pressure: 16MPa
- motor power： 2×2.2kW
- rail inside distance： 2000mm
5 Hydraulic system
Hydraulic fit-up device and idler rotator all including hydraulic system. It’s technical character as following：
（1）system pressure 16 MPa
（2）working pressure 12 MPa
6 machine components
| Description | Qty | Unit | remark | |
| 1 | Power rotator | 1 | pc | |
| 2 | Idler rotator | 1 | pc | |
| 3 | Idler hydraulic elevating rotator | 2 | pcs | |
| 4 | Hydraulic pump station | 1 | set | |
| 5 | Control system | 1 | set |
