Grab Overhead Bridge Crane Description:
QZ model grab, grapple double girder overhead bridge crane is heavy work; the grab crane working-level is A6, A7. Rated lifting weight is 5~25T and the grab opening direction have two kinds of parallel and perpendicular to main beam. The capture device is four-rope grad with double drum, simple structure, reliable operation. Grab, Grapple, Bucket can open and close at any height. Grab only applies to granular material which on the natural state, when grab underwater items or special items, shall be mention particular when ordering.
Grab Overhead Bridge Crane Construction:
QZ model double girder overhead bridge crane is composed of four parts: the box type crane bridge, Crane travel mechanism, crane power electrical device and grab, grapple, bucket. Lifting capacity includes the dead weight of the grab.
Grab Overhead Bridge Crane Working Range:
QZ model double girder overhead bridge crane is mainly used for carrying grain, ore, quartz flour, limestone, nickel, scrap metal, waste, block, coal, sand, other granular material and wood etc bulk material in the warehouse and workshop of cement, coal yard, mines, port, railway, other plants. Various grabs could be equipped according to the shape and size of the material, such as two ropes or four ropes mechanical grab, electric hydraulic clamshell bucket grab, six petals grab bucket, stainless steel grab, log grab etc types.
Grab Overhead Bridge Crane Control Mode:
QZ model double girder overhead bridge crane control system includes ground control (remote control) or cabin control.
Grab Overhead Bridge Crane Safety Protection System:
1.Overload protection in the event of overload, the hoist unit switches off and only the lowering motion is possible
2.Long and cross travel limited by means of preliminary and final limit switches or Wireless anti-collision device
3.Safety hook latch used for avoiding the lifted material out off from the hook
4.Audible and visual alarm device to inform the person stay near by the travelling crane.
5.Rain Cover for lifting mechanism of outdoor cranes, electric cabinet and driving mechanism
6.Protective earth conductor is fitted as standard
7.Voltage lower protection system
8.Current overload protection system
Technical parameter
| Rated load/ton |
5 |
10 |
16 |
20 |
25 |
| Span/m |
10-40 |
| Lifting height/m |
22 |
| Working class |
ISO A6 & FEM 3M |
| Lifting speed/m/min |
40.8 |
40.26 |
41.8 |
48.5 |
38.8 |
| Open-close speed/m/min |
40.8 |
40.26 |
41.8 |
48.5 |
38.8 |
| Trolley running speed/m/min |
44.5 |
45.6 |
43.2 |
43.2 |
43.2 |
| Crane running speed/m/min |
92 |
86.5 |
87 |
87 |
87 |
| Dead weight/t |
17.5~38.5 |
25.1~46.6 |
43~63 |
50.6~70.7 |
54.2~75.8 |
| Number of wheel |
4 |
4 |
4 |
4 |
4 |
| Max. wheel pressure/KN |
75~17.4 |
117~186 |
202~258 |
235~302 |
255~320 |
| Steel track recommended |
P43 |
P43 |
P43 |
QU70 |
QU70 |
| Power supply |
3AC 220~480V 50/60Hz |
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