Suspended device with ring-shaped grippers

Suspended device with ring-shaped grippers

Suspended device with ring-shaped grippers is designed for gripping and transporting the piled steel bars.

The device is suspended by wire ropes to the drums of the winch installed on the trolley of the overhead travelling crane which allows to move the device along the bridge, to lift and lower it. The slewing gear mounted on the trolley provides the device rotation through 180° in any direction from neutral position along the bridge.

The gears are controlled remotely from the control desk in the crane cabine.

To facilitate transportation, the gears are delivered being partly disassembled with dismounted tongs and ring-shaped grippers, dismounted end beams.

The gears are operated at ambient air temperatures ranging from minus 20 to plus 40 °С and relative humidity up to 95%.



Basic technical data
Parameters of cargo (pile) to be transported by grippers:
- diameter, mm, not more 600
- length, mm 3000...12000
- mass, t, not more 10
Time of grippers opening (closing), s 4...6
Numbers of grippers pairs 4
Alternatives of pile lifting by grippers:
- by two extreme pairs
- by two middle pairs
- by four pairs
Capacity at hooks, t:
- at middle hook 10
- at one extreme hook 5
- at two extreme hooks 10
- at three hooks simultaneously 10
Grippers drive – hydraulic, from the pump unit installed on the cross-piece; stand-by pump unit is also provided
Pressure in hydraulic system, MPa (kgf/cm²) 2 (20)
Power supply parameters:
- pump a.c., 380 V, 50 Hz
- control system d.c., 27 V
- magnetic washer d.c., 220 V
Dry mass of device, kg 10500
Overall dimensions, mm: 5720×1380×4005