3-roller symmetrical plate rolling machine for ships

the machine adopts a 3-roller symmetrical structure. the upper roller makes vertical movement at a symmetrical position in the center between the two lower rollers. the hydraulic driving is achieved through the action of the oil in the hydraulic cylinder on the posion. the two lower rollers make rotation and provide the plates with torque through the engagement between the gear of the moderator and gear of the lower roller.several groups of support rollers are devised on the lower side of the two lower rollers to enhance the rigidity of the lower rollers and enables vertical adjustment.on the upper side of the upper roller. there is a rigid beam. and between the beam and the upper roller, there are several groups of support rollers to enhance the rigidity of the upper roller. the machine is fit for bending the work-piece in arc shape and with excessive width.

 

 

Technical Description

 

W11Y-20×6000 rolling machine

 

This machine used to coil plate into different sharps such as cylindrical form, conic form and arc, it adopted Japan hydraulic technical.

1. Main technical data:

Upper roller adding pressure          430tons

Max. Thickness can be rolled         20mm

Max width of roll plate              6000mm

Up roller diameter:                  Φ560mm

Down roller diameter:                Φ360mm

Support roller                        3 group

Distance between two down rolls:       550mm

Drive speed:                        about 4.0m/min

Bending capacity 

T16×B6000×Φmin1000 mm(σs≤245Mpa)

Hydraulic motor:                     18.5KW

Main motor                          45KW

2. structure and main parts:

2-1 upper rolls lift device

It driven by double cylinders, main cylinder working pressure is 19.5 Mpa, Upper roll two ends fit with double self-aligning bearing to reduce the friction and motor power. The material of upper roll is 45# forging with heat treatment.

2-2 down roll drive device.

The material of down roll is 45# forging with heat treatment. Level motion motor supply the power, through the strap drive to CWU worm wheel and pole speed reducer. Upper roll level motion drove by worm wheel and pole to finish bending in dissymmetry form.

2-3 tuning device

composed of one hydraulic cylinder, the joint pole drive the bearing seat of side rolls to tuning and close, the pressure come from hydraulic station.

2-4 upper rolls balance device

lift upper rolls to upper limit position, the balance frame press the upper rolls end , then upper rolls in balance position through bearing seat support and balance frame press, it is easy to keep tuning bearing seat to tuning and close. there is limit switch to check upper rolls position.

2-5 bottom base.

Adopted steel welded frame, vibrating treatment of ageing for removal of internal stress with good rigidity and stability. and it is easy for installation and transformation.

2-6 hydraulic system

Composed of Y series motor, gear pump , valves , oil tank, pipe and so on.

Max pressure is 19.5 Mpa , the valves adopted from Taiwan.

2-7 electricity system

Composed of electrical box, operation table, manual button . the power is 380V50HZ adopted PLC control system code with longevity easily operate. Whole bending process can read from the indicator setting on the control box.

3. Main specialty of this machine

3-1 down roller main drive transfer torque high speed by through the V-belt transfer, with overload protection function.

3-2 use closed frame chassis, easy to installation and removal.

3-3 aligning rolling bearings used at both end of upper roller, less friction, can bend thin and thick plate.

3-4 use Taiwan’s YOUSHEN hydraulic valves, convenient installation, maintenance and debugging.

3-5 flow divider used in hydraulic system synchronization loop, detect by the displacement sensors, set on digital display, synchronize positioning accuracy of +0.15mm.

4. inspection

   JB/T8796-1998 Standard

5. Delivery time

70 workdays

6. Serve 

Guarantee one year and offer serve for ever.

7.Scope of supply:

7-1 roller bearing                    WAFANGDIAN   China

7-2 hydraulic valves                  YOUSHEN      Taiwan

7-3 Composite bearing                WAFANGDIAN   China

7-4 working rolls                     NANGANG     China

7-5 main motor                       HENGLI       China

7-6 seals                            Wall card       Taiwan

7-7 main electrical parts                SIEMENS      China

7-8 Main speed reducer gear            TAIXING       China

 

8. List of accessories to be provided by us: